Deliberate practice for X literally means do thing X.. i think that is simple - the best way to get better at X is do X. So it really depends on what you want t

Deliberate practice for X literally means do thing X.. i think that is simple - the best way to get better at X is do X. So it really depends on what you want to get better at. Practice for algorithms could mean doing a lot of leetcode/interview style algo problems. Practice for working with large codebases means practicing reading/understanding code quickly. So maybe picking a large scary open source project and trying to make a contribution. Reinventing wheels like andreasgonewild is the most useful and fun kind of practice IMO. Pick a cool technology and make it yourself from scratch. Maybe in a new area you know nothing about. A distributed KV store? A stack-based programming language? A code formatter? If you develop something big like that, you will surely exercise all the muscles it takes to develop something. Reading too many tutorials or watching too many videos is narrowly exercising the "learning" muscle. Solving algorithmic puzzles is narrowly exercising the "CS fundamentals" muscle. But the best workout to prepare to chop wood is to chop wood.