Your goal could be to lose weight. That's great but it's not actionable. An actionable goal is "go to the gym for 30 min today before lunch to run on the treadmill." So set that easy and actionable goal and go do it.

What works for me is focusing on at most two or three things at a time. Anything more than that becomes too difficult to keep up. Right now for me those are fitness, working on my startup idea, and reading.

As an example, for fitness I use the two day rule. If I didn't workout yesterday I have to work out today. If I worked out today then I can choose to workout tomorrow, or not. I never go two days in a row without working out. I also workout first thing in the morning so that it's not hanging over my head all day.

It's mostly about scheduling things that you want to do into your day and actually doing them. Give yourself days off if you need them, and plan things out ahead of time.