Labels are useful on a population level and for research, but individually I think they can cause a lot of harm.
A diagnosis is only helpful insomuch as it helps you learn about yourself, but you are not the perfect encapsulation of the average of everyone diagnosed with autism. You are an individual, with a unique mix of traits and abilities, including an ability to grow & develop.
Does autism explain some of who are? Maybe! But does it explain all of who you or all you can become? Hell, no!
Learn about yourself by listening to yourself--there is no better teacher!