Is it normal to crave memory loss or to even want amnesia?

I've always been regarded by my peers to have a good memory. From my perspective, I think my memory has been active since I was 5 years old. This has been both a blessing and a curse. My memory has helped me out in school a lot so it's been a blessing when it came to academics and grades. However, since I remember a lot of my past that means I also remember all my mistakes that I've made along the way. My mistakes and failures are a big part of my memory, there’s definitely more of them than happy memories. This is bad because it only takes a reminder or an associated word for them to just pop into my head and ruin my mood instantly, even if I was the happiest person in the world at that moment. Even memories from when I was a different age and a different person still haunt me whenever I’m reminded of them. I know that it’s completely insulting to those with real traumatic memories that I get upset over remembering my mistakes and failures, but sadly I can’t control my emotions otherwise this wouldn’t even be an issue right now.

Since this is a problem caused by my above average memory, I’ve grown a little envious of people who don't have a good memory. Being forgetful is kind of appealing to me, even if it would make me do a little poorer in school. I was thinking that when I turn 21, I’ll try to repress those bad memories even if it costs me my happy ones too. Don’t worry, I wasn’t planning on turning full blown alcoholic, I simply want to drink enough to be more forgetful. I was also thinking that I wouldn’t mind getting my memory reset entirely from some kind of accident. I know that this idea is selfish, wiping my memory entirely only for others to be forced to deal with my memory-less self, how could it not be selfish? Regardless, I can’t stop craving the idea of having my memory completely wiped like that, to be completely memory-less. It’s not like I would become an infant if I ever lost my memories because math and english and all that stuff is stored in another part of the brain. So what do you think? Is it normal or at the very least not unhealthy to be craving memory loss like this? Am I not the only one who feels this way?