When I'm trying to add something into my life that I "want" to do, but I have so many things that I "need" to do, I have to set time aside on my calendar. If I'm really busy, I'll set timers to start the activity and a timer to end the activity so I don't feel guilty for not getting back to the things I need to get done.

I recommend starting with small chunks of time, 15-30 minutes 1-2 times a day. There are programs that you can put on your phone or laptop that will limit your access to certain apps or websites. I have a friend who has on that has a pop up when she tries to go onto social media that asks if this is how she wants to spend her time. It also has a timer that has a snarky comment that will pop up every 15 minutes.