I think this has to be tempered with an acceptance that we all have strengths and weaknesses, and sometimes you are not the right person for 'that' job.
If you are working in a team at a big company it's easy to recognize this because the person who is sits in the next cubicle. Programmers don't start making product flyers because the marketing guy always does them so well.
But working alone, when do you decide to hire another freelancer to do that bit?
A friend who designs games always hires artists to concept how important models should look. They send him some pencil sketches. Surely he could save money by coming up with an idea and just drawing it, it's not hard...
But the ideas from a good concept artist are just better than what he or I would do. They spend a lot of time getting so skilled, and if he invested that same time, no game would get made.
So yeah, knowing how to do everything is good, but spotting when you need to have spent those 10'000 hours more so...
If you are working in a team at a big company it's easy to recognize this because the person who is sits in the next cubicle. Programmers don't start making product flyers because the marketing guy always does them so well.
But working alone, when do you decide to hire another freelancer to do that bit? A friend who designs games always hires artists to concept how important models should look. They send him some pencil sketches. Surely he could save money by coming up with an idea and just drawing it, it's not hard... But the ideas from a good concept artist are just better than what he or I would do. They spend a lot of time getting so skilled, and if he invested that same time, no game would get made.
So yeah, knowing how to do everything is good, but spotting when you need to have spent those 10'000 hours more so...