The Things In Our Control

I think and wrote about the things that are not in my control a lot but never really think about the things in my control. What if i practice to be able to detach from things that are not in my control, but neglect all the things i could control such as my temper, self control, self awareness...
I recognize this because in the previous post, i realized that i was reactive to impulsing emotions. I initially thought that emotion was there to tell me that there's something wrong, the lonely feeling was there to tell me to go out and make new friends because I'm a human being and we are social animal after all. That's basically correct, but here's another scenario that fall into the same pattern, when i find something new while doing something, i stop doing that and researched the new thing i have just found instead, wasting the time not doing the thing I'm supposed to do. Even though i learnt something, but never really put in the work to make something become real. Hence, i didn't do what i wanted to do, i thought i wanted to do research on that new thing but it was not on my catalog in the first place, i should rather put it in the backlog for later research instead of acting on the thought that i have to find out what it is all about.
Then, practice on the things i can control is no less important than detaching from the things that we can't control. I can be nonchalant but I'm weak because i can't control myself, then i will eventually be insecure because i do nothing all day, there's no discipline within me.