Time to change (again)

Hey everyone, as my 18th birthday is coming up soon, I decided to write a list with all the things I want to change about myself. The point of this list is that you can add the things that you criticize me for in the comment section. So, what I want, no, have to change is:

• I musn't talk about anyone behind his back (even if I said it to him face to face)
• I shouldn't speak out my mind so often any more, especially when it's not required
• I have to stop wasting my time so much
• I have to do some pc-fast from time to time

I bet there are still a whole bunch of other things but right these are the most important ones.
Feel free to add your criticism! :)