I found it incredibly cringe talking to my past self (but I don't when I'm talking to my present self? #questionsforanothertime) but hopefully you can apply some of the messages I would have told myself to your own life! Or if you're past all that, know that you weren't the only one.
Whenever you're feeling down, just picture me and know that there is someone out there that has failed harder, been even more awkward and regrets even more of their decisions. I am a martyr for your flaws.