Lost much?

Yes, I'm lost. I really don't know what am I doing with life or what am I going to do in future. I don't know the decisions I made were right or wrong. I don't know why I don't listen to my mother when she gives my the right advise and I always go for the wrong. I don't know why I think so much- about the steps I've already taken, about the future. Right now, my mind might blast with the massive amount collisions of my thoughts. "I should have done that." Yes, I'm not some 'mahatma'. I regret. I regret some decisions I've taken in the past, and I might regret in the future looking at my rate of taking 'bad decisions'. But I guess that's okay. We make mistakes to learn. But what if you make that very mistake again? There is so much going on your mind that you're not able to think, not clear about anything, like everything is a blur. You don't know what to do or what not. Like, there is just way too much to handle. Work. Studies. Love. Family. Stress. Expectations. Feeling of incompetence. You feel lost, where everybody is going on such a fast rate. Your inspiration is lost. Your confidence is lost. Your faith is lost. You become this heavy pessimist. "I can't do it." You say this, and you've already lost the battle.
At these moments, the best thing you can do is to believe in yourself. You can do it. You don't have to do it for others, do it for yourself. Find yourself. Maybe its okay to not know what will happen, let it be a surprise, otherwise what would be the fun? Not thinking about the future and making the best out of the present, I've heard this many times before. But I guess, it's time. It's time to implement all that shit.