How to forgive myself for these mistakes ?

When I was younger, I was low in confidence with women. I didn't take rejection well and tried too hard. I've never harassed a girl, but have tried too hard with texting if it wasn't working out. If they don't reply, now I give them one more chance and if they don't reply I assume its not working out and move on. In the past, I would try several times and look so needy and girls would think I'm stalking when it wasn't my intention. I just was overthinking, got too attached and tried way too hard

In past 3 years, I've learned the difference between persistence and neediness. As stated, I don't make these mistakes anymore and any girl over last few years I've dated can say I ever looked desperate or like a stalker.

I feel anxious word would get around what I used to be like and then rumours get made up of me, and one or two In particular I feel that I tried too hard and looked so desperate. I feel guilty and what if they thought I was stalking them. 

How do I forgive myself? I've definitely learned from my mistakes, and my friend made good point that if I was that bad the cops would have been called or they'd have threatened me, which they never did. So am I too hard on myself?