Personal anecdote - I became very good at one activity early on in life. This was at the expense of other things such as education and a social life. The dedication required to reach a high level of skill, and the journey overall was great fun and taught me a lot about what it takes to reach the top. What impact has this had on me? It opened a lot of doors for me early on. Ultimately I faced a decision, do I pursue a…
It seems to me that like you said, dedicating yourself to something can open a lot of doors. More than if you had become above average at multiple things.