I wouldn't necessarily call this "advice" so much as inspiration, but I've read this recently, after feeling down on my luck with romantic love. I'm 40F and spent a year not dating but instead healing from a very messy breakup.
Anyway, it's a famous (and very much over-quoted) quote by Maya Angelou:
"To those who have given up on love, I say 'trust life a little bit.'"
I interpret this as remaining open to possibility, while still living your own life and doing what makes you happy. I've been burned many times, and while I think it's important to let yourself heal from the burns, establish better boundaries, look out for yourself, etc., it's also important to know that good caring loving people do exist out there. And they just might like you for you!
I wonder if this resonates with anyone else.