yeah seeking mentorship before starting your business is great because it would make you to learn from a much experienced person who would prevent you from making mistakes he or she has already made there by making your learning progress much faster. Not that am saying individual learning is bad, it actually great to try to learn on your own but be prepared to fail multiple times .most people don't have high tolerance for failure,if they could fail once they give up.by seeking mentorship they are trying to learn from someone who has passed the path they are trying to pass and was successful so as to learn the successful full strategy from them.