There is a lot I ought to be learning but sometimes I become lazy and apathetic. When this happens, it helps me understand those who are more lazy and indecisive than me. However, I have had enough of being lazy and have decided to stop the laziness from now on.
comments:
"neglected" is not the word you want. Tell me more about what you mean to say.
I use "understand" rather than "sympathize" because I don't think you actually feel sorry for them.
"the ones" = "those"
"fed up" is a bit too strong - it is too close to anger
You can say "henceforth" instead of "from now on" if you like.