I second the recommendations here about finding an activity that you like. For me it was rec sports. Gets me out of the house a few days a week, and for me it was an activity to help me stay active but also a reason TO get fit. I wanted to feel less beat up after playing, so I started working out and stretching regularly.

I also had trouble with getting to the gym, and had trouble with focus and picking workouts, so I had success with P90x. It's all workouts you can do at home with some adjustable dumbbells. I think I got a deal on the streaming subscription to Beachbody for 100$ for the year. Then I just followed the program and the workout calendar. They have a number of different programs on there, if you want to get ripped I recommend P90x, if you just want to do some sort of workout for 30 minutes a day I'd recommend p90x3 because it's easier to stick to.

That was a good start for me, but I ultimately settled on just picking my favorite moves from the program and I switch between upper and lower body workouts every day because I found I was consistently skipping certain days of the programs.