I am also working on overcoming some time wasting and destructive habits and addictions (social media scrolling, youtube, staying too late at night and waking up late in the day .. etc)
But the way I am approaching this problem is by being aware and mindful of my self while "unconsciously" doing these habits, and by trying to really be aware of how they can be time wasting and destructive in the long run, you need to continuously remind yourself of that, A daily meditation habit IMO can be the best tool to help you in doing so.
It can be quite difficult for many of us in this age of technology to give up all of these forms of entertainment and stimulations or even avoid them, but I will share with you my approach from my personal experience:
1) Be mindful of your self while you are doing the habit or about to do it (which is usually on autopilot mode), watch your self closely and think through the justifications that you give yourself at that very moment.
2) Always, be aware of how destructive and time wasting this habit can be in the long run, and keep reminding your self of that when you get the urge to do it (stop doing it on automatic mode, switch to manual).
3) Try to find the real root causes of your addictions, (what is it that you are trying to avoid by distracting yourself with continuous entertainment and stimulation), and deal with it ! (Leo has a great video on this > Overcoming addiction)
4) Try to slowly substitute your means of entertainment, with something constructive (audio books, educational videos, Lectures .. etc), don't consume any thing. Instead, always ask yourself, is the form of entertainment that I'l be using now, positive and helping me somehow in growing and improving my self and giving me some new helpful insights, or no ?
Now of course am not saying to cut all forms of entertainment at once and totally replace them with only educational stuff and audio books, but what I am saying is Be AWARE & MINDFUL of what you do, and slowly replace the bad habits and addictions with constructive ones, It might be challenging at first but things will get quite easy with time.
