I've had a similar mental situation like this. Although I don't personally know your situation, what I've done is download a lot of motivational speeches and play them everyday. I live with like constant anxiety and depression about if I can't make it to game development, Ill be letting people who have supported me down and myself. Some people just need the daily motivation because they've been hard wired for depression for so many years due to their environment. I would also recommend trying to manage your daily habits as well. Personally, I wake up at 6am and sleep at 12am. That is an 18 hour window of productivity which with your 11.5hr daily routine of working and commuting, seems manageable. Follow mentors as well because they can help you when you are feeling down. I follow Gary Vaynerchuck, Eric Thomas, and Tony Robbins to name a few. Set aside time to meditate and reflect too. Meditation in the morning feels great and helps me prioritize goals/tasks, while reflection helps to figure out what went right or wrong and what I could do better the next day. There are some days where you can't follow this kind of routine, but that's okay. As long as you reflect on what happen, and try to figure out a solution to get back on track, you are set for future success. I hope everything works out for you and best of luck!

I think it's mainly momentum.  Even if it's a few minutes a day, make sure you open it up and actually do something.  If you get tired of it, work on a different portion.  Creativity can help brighten your outlook.  Think of it as the one thing that is actually yours and that you have full control over.

I echo what @ApochPiQ said. While you look for someone that's qualified to give you life advice, here are some more things for you to consider:

1. This is a quote from a local newspaper article on motivation. A specialist says:

   Quote

   The first impulse of motivation comes from your conscience. But strong motivation -- that boost of happiness and excitement -- only comes to you after you reach your first results. The more results you reach [with your life projects], the more motivated you will be.

    

2. Use your eating habits to improve your quality of life. Avoid takeout and processed foods and rely on homecooking more. Since homecooking takes time, there's this tip from Jamie Oliver which is to cook in big batches (during the weekend, for example) so you can freeze portions for the week. Besides the obvious nutrition benefits, it will save you time during the week since you won't have too cook (just heat in the microwave or stove for example), and depending on your situation homecooking can also be more economical, saving you a few bucks.

3. The following post by @Dannthr is for the music industry, but I consider it inspirational for creative fields in general. Print it (on actual paper) and read it from time to time: 557522-i-want-to-be-a-game-composer

4. Forgot to add something, and it's very similar to what @fireside7 said. Any progress is progress. It's cumulative. Big valuable projects are made with incremental steps, that's how you'll get yours done.

Good luck.

Did you make any progress, or had any breakthroughs? I'm very curious.

Wow, I didn't realize that this thread was still active!

In case you are all wondering, have things gotten better since then?  Actually no, things have gotten MUCH worse.  Do I feel the same?  Honestly, no.  In fact, I feel more motivated now.  I've quit binge drinking too!

Right now I am living with mom and pops for a while since I can't afford my place anymore and still broke as a joke.  But at least I have a part time job doing game testing for Win10/Xbox Game certification.  I'll likely be doing this until I can get something better.  Since I'm far away from the job now, I have to commute about 4-5 hours a day via bus, but I scraped up enough money to get a used Surface Pro to work on my game's UWP port for Dream.Build.Play.  I'm going to submit my game to this contest before the end of this year and hopefully win some money or exposure. 

You just have to:

1. Stop complaining.  There's always someone that has it worse and deals with a greater set of challenges than I do.  I mean really, I have Microsoft contacts, id@xbox access, the business card of a Sony publisher, and more.  Plus Josh said stop
2. Keep on keeping on.  Leverage your advantages, build smart solutions to overcome your disadvantages.
3. Stop drinking!  Killing your brain cells and trashing your liver isn't going to help. 

So even though I've had no breakthroughs and things have gotten far worse, I feel more motivated.  Ever hear the saying "I'm sick and tired of being sick and tired?"  Well, I'm sick and tired of saying that I'm sick and tired of being sick and tired.  That's enough, let's just move forward!

Shogun

I am in the same boat, I can't stay motivated for long periods to keep working on my game projects. It comes in waves for me. I end up developing my game every day for one or 2 weeks on all of my free time, and then stop for about a month. I drink the whole time, its a wonder my game works at all. I really need to stop writing code under the influence. Someone is going to end up in an accident