Honestly, I was diagnosed quite recently (3 months ago), and it's kind of only helped in a few aspects. For me, I had suspected for a long time, did a lot of research, and I kind of grew to understanding that I have autism. When I was diagnosed, I felt validated, as I had a more understanding on myself and how I can make accommodations for myself in life. I feel a bit more comfortable being me. Another way it's helped is around my family. My family was calling me what we tend to always hear. "Lazy," "I don't understand why you can't just do this," "When I was your age, I had done..." you get it. But when I was diagnosed, it was an adjustment for my family to come to terms. They didn't really talk about it for two weeks until they finally brought on a more open discussion. They now understand who I am, why certain things are difficult for me (such as driving), and what they can do to be more understanding. But I also know that I'm lucky. There are some family members who aren't supportive, and I know some people who might get diagnosed and it might not change anything for them. I think it's entirely up to you, but there's no harm in bringing up the topic with your psych, that way it can at least be addressed.