OK, i will try my best! No, you don't have time to try! You need to start now!

Feeling so disappointed about myself and getting more and more demotivated. No mood at all now.

Quit it. Stop it. Stop the stopping. Start the starting. Really. I mean, really. Because you know what? Days turn into weeks, weeks turn into months, months turn into years so fast you will not know what happened. But you will know what did not happen. And you will feel true remorse. So let's avoid that, shall we? Get going. Go for it!