This is not very scientific, but it has worked for me. I have curated this list of YouTube videos some of which have helped me and some of my friends a lot in the last year. I watch 1-2 of these in the gym when I am doing my cardio (elliptical or treadmill) three times a week towards the end of my workout.

goo.gl/Xv4pwT

I am a very distracted person, and need constant reminders. I have designed my life in such a way to be constantly reminded of my priorities. Once, I decide I need to include an activity in my life (be it learning, workout, eating healthy), I set up a time and corresponding reminders/ alerts. This sort of planning and tracking helps tremendously stay focussed on only things that matter.