I don't want to spoil myself anymore

"Struggle - Spoil - Regret" is the exact verbs to describe my current behavior pattern.

I set up a goal, tried my best to achieve it, then when I felt there were substantial progresses, my steps would slow down, my self-estimation would balloon, and I began ignorant to potential risks and faults. Then the real challenges came, and because I'd been totally spoiled, I had little preparation for the overwhelming difficulties, then the only thing I could do is to regret.

I don't know when I shall be more proactive rather than reactive, but let this note be a reminder to my future mistakes.