The temptation is to do many things. More options seem safer. More activities seem more impressive. But spreading thin often produces shallow results everywhere.
Depth requires sacrifice. Saying yes to going deep means saying no to other interesting things. This feels limiting, but it produces mastery that breadth cannot.
The person who reads ten books superficially learns less than the person who reads one book deeply. The person with five hobbies may have less skill than the person with one practiced passion.
Where could going deeper serve you better than going wider?