Just some encouragement here for you good people...
You have to do the work. There is no one else that can do it for you. It is entirely up to you; actually, it has only ever been you, because it is you that rolls out of bed early to bring it. No one is going to do that for you. If you want to do it, then you will figure out a way to make it happen.
Like some of you, I have a family. That makes things a bit challenging at times, and you will likely have to work even harder to find the time, to make the space, so that you can bring it. And, I will add, those that are parents, this is a great example to set for your children. You want to be, "The Daddy that brings it." You want to be, "The Mommy that brings it." Because, you want to instill in them that they can, too. It's a valuable life-lesson. In turn, it is psychologically healthy for you as well, to know that you are a parent that is firing on all cylinders. In addition, it is incredibly gratifying when your child sees your work. "Wow... that's the new game that you're working on! Let me try!" It will fuel you like a Saturn V launching to the moon.
You may look at your project and think, "I'm never going to make it. I'll never finish." Please, I urge you to set these thoughts aside and push through. Think about the analogy of building a wall. A wall is built one brick at a time. Watch a mason build a wall one day. You will observe that he or she lays one brick at a time.
This is how you have to view your project. Sure, it would be amazing to have an entire day, every day to devote to your project. However, the reality is that most of us simply do not have that luxury. So, strive to think of it as a mason: lay one brick at a time, and eventually the wall will be built. Every character that you type into Xcode, Visual Studio, etc. turns into a keyword, a variable name, etc... that subsequently turns into a line. Those lines build up, day by day, and before you know it, you have a program, and you look back and think, "Wow, why did I ever think I could not finish?"
Also, let go of "Internet Time." That is to say, we all read HN and see these impressive "Show HN" posts, and submitted stories about the Next Big Thing... and it seems like things are happening so fast, and we think, "Why even try?" Well, the reality is nothing is happening fast. It is an illusion. Most all of these stories have an incredible amount of time and work behind them, so let go of that illusion, get started, and stay focused.
"There's only this moment and the next moment. Every one of those moments is a test that you get to take one time and only one time." [1]
Strive to drive through each moment. Make it count.
You have to fight. This is paramount. I will say it again... you have to fight! What I mean here is fighting by engaging your Will. Engage your will to get up, to get moving. Engage your will to eat right, to exercise and go to bed on time so that you have the energy to get up and bring it.
What you are going through is what we are all going through; that is to say, we are all grinding, whether it be in a start-up business, or washing the dishes by day as we bootstrap a start-up at night; we are all struggling, fighting to drive our dreams into existence. We are all struggling in some way, whether it be through failure, health issues, personal issues, family issues, etc. No one is immune from the grip of suffering through his or her struggles.
You are not alone.
Embrace the grind. Vince Lombardi said it best:
"And in truth, I've never known a man worth his salt who, in the long run, deep down in his heart, didn't appreciate the grind, the discipline. The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather... a lack of will."
You have to use the will to fight those thoughts that say, "I'm getting older. I'm failing. I'm not motivated. I can't finish."
The clock is ticking for all of us... fight! You never know where your work will take you. Do not forget that, you have to dream it first in your mind before you can see it in your life. And to see it in your life, you must work. You may not be able to see things clearly now, but you never know what doors could open for you that you did not even know existed.
Ang Lee, the Taiwanese film director and screenwriter that directed Crouching Tiger, Hidden Dragon and Life of Pi, discusses his struggles to break into film. I urge you to read it:
http://whatshihsaid.com/2013/02/26/ang-lee-a-never-ending-dr...
[1] https://www.youtube.com/watch?v=pBLV6RG4TwY