Most people quit because they forget that you have to be bad at something before you can be good at it. It's so obvious. You suck. Of course you're not going to win in 2 weeks. But if you can learn to enjoy extended periods of failure, you will make it very, very far in life.
Find your obsession. Choose something worth dying for. Ignore everything else. Become monomaniacal. Sleep when you're dead. Eat when you must. Think about it constantly. Dream about it nightly. Wake up thinking about it. Sacrifice relationships for it. Lose friends over it. Let people call you crazy. Let them call you unbalanced. Good. Balance is for the weak. Mediocrity is for the many. Greatness demands sacrifice. Obsession is the price. Pay it gladly. Ignore the voices telling you to be reasonable. Reasonable men change nothing. Obsessed men change everything. Van Gogh was obsessed. Da Vinci was obsessed. They called them mad. History calls them genius. Find what makes you forget to eat. Pursue it relentlessly. Let it hollow you out. Let it fill you back up. Become the thing you chase. Merge with your mission. Disappear into your work. Emerge transformed. Or don't emerge at all. Better to burn out obsessed than fade away balanced. The world needs your madness. Give it everything
Major cheat code for life: Learn to delay your reaction. Anger, fear, and impulse will try to make you move fast. There's power in pausing. In the pause, you see clearly, you respond wisely, and you avoid decisions you’ll regret. Slow down to speed up.
The brain is designed to learn through constant repetition and active, hands-on involvement. Through such practice and persistence, any skill can be mastered.