If you can honestly say to yourself that you will only stop if you die and really do it... you will win.
Pick something, pick a goal... do something about it, do something everyday, never stop until you succeed, never stop until you die. This approach will guarantee you success because you will keep on taking actions even if those actions were not making a large impact.
If you have this approach always on your mind then you will become unstoppable, it's like dedicating your life for something and you know that you will achieve it even if it takes very long. You're like a water that is always flowing, you will keep on flowing and flowing until you arrive in your desired destination.
Because you have no choice but to keep going if you really want it, what other choice do you have? stopping? NO, stopping will never get the job done, it will only make you stuck, depressed and feel a lot of regrets.
So start now, start your journey now and never stop until you win. It will never be over until you win, you have what it takes to become a winner and succeed in life. Once you made a decision that you will never stop then that's it, you're already on your way to victory. There maybe obstacles along the road but none of them can stop you.