How to help friend who needs to get better at planning?

I have a good friend who is intelligent in many ways, but bad at planning /​ achieving his goals /​ being medium+ agency. He’s very habit and routine driven, which means his baseline quality of life is high but he’s bad at, e.g, breakdown an abstract and complex problem statement like “get a job that pays +100K and has more interesting co-workers” into a series of concrete steps like {figure out what the meta-game is in job hunting, find the best jobs, learn skills that are optimized for getting the type of job you want, etc.}

We have mutually agreed he’d like to get better at this skill, and so I’m trying to help him out.

Are there good books /​ practices /​ coaches /​ literally anything he can do to improve this skill? A simple and obvious thing would be for him to make a bunch of plans and execute them, but I’m also looking for supplementary material.

A meta-note here is that taking this type of action (posting on LW to hopefully improve an abstract skill like “getting better at planning”) is the exact skill he needs to improve.