But as depressing as that is, its true as fukk. In the end of the day there is no reason for anything, if you find your purpose or not you will die in the end of the day anyways. Why spend your whole life looking for your "purpose" (which for 90% of Americans is some sort of capitalistic endeavor, ie making some cac some money) and enjoy the life you have if you have the opportunity.
When 22 took over Joes body, to me that was like him learning to accept himself. In the beginning of the movie he was hiding from his mom, hated his job, and was constantly looking to fulfilling his purpose.
When 22 took over she told his mom what up and she actually supported him. He connected with his barber in a deeper way because as 22 he didn't have to rant to his barber about Jazz but actually got to connect on a deeper level because they had a conversation about themselves.
Joe himself even got to realize the finality of making your life about capitalistic endeavors, even if it ties into your interests when he played in the band. It is unfulfilling. Right after he played in the band, which was his dream, the thing he thought he wanted, the thing that he thought would get his mothers respect, he asked what's next.
She looked at that nikka like "What's next?
nikka you come to work tomorrow, that's what's next"
That's it, he basically got his dream job and it didn't give him what he needed. If he spent his time enjoying his life and loved being himself like 22, instead of waiting to enjoy his life he may have been more fulfilled at that point.
The barber kind of had the lesson summarized in where he had a dream to be a vet but because of circumstances he had to become a barber. Instead of still focusing on being a vet and wasting years of his life and enjoyment on something he may not have even really liked he found how to enjoy being a barber and make the most out of that.
I don't think the lesson is settle but more, enjoy the life you have because you only have one, then you are off to the great beyond.