Everyone has their own expertise. Some are good at reading and doing research on projects probably for ICOs, some are good at day trading, some are good at long term trades, etc. Research on all of them. Choose the one that best fits your current knowledge and what you prefer doing.
I went to write a reply to this post, but mjglqw has summed it up perfectly.
Find what suits not only your skillset, but also your lifestyle. Do you have time to day trade? Do you want to find a project, invest, and sit on it for months/years?
Find your niche and stick to it.
Good luck out there!
-Knightly