I think everyone is different and has their up and downs (pun intended) in their game.
I would break up areas of the game and then focus on the specific area that needs the most improvement or could be the easiest.
For me I wanted to improve my drives so I worked on improving my greens in regulation. Now I’m working on lowering my number of putts per round.
It just depends on where your level is at, what your interested in improving and then my best piece of advice is getting out and hitting the range with an idea of focus in mind.