I remember back then like around one or two years ago, when I hadn't been really long in the world of RPing, I was trying to figure out what kind of direction should I take my character's general development to its conclusion in a forum-based RP. Back then, for this one character I was trying to get them killed off some times down the line for reasons. Then during some chatting session with the GM and others, I entertained the idea of facing the figure everyone thought to be the final boss since the guy happened to be not too far away from my character, and he actually agreed to it. 

It was exhilarating for me to partake in. I went there with full expectation of my character dying after putting barely a fight, but I managed to both get them survive, put some decent fight against the guy, figured out a probable weakness (though others wouldn't be able to exploit it), and most importantly though, the encounter managed to be something that I can use to be a turning point for my character's development path. It was so fun to see them being utterly broken by their loss, and due to the GM actually paying attention to everyone's characters, the banter between them actually fueled this further. The character still died some times later, but in the end they ended up as the character I had the most fun writing, even until now.

It's all thanks to the GM, bless him for being so accommodating. It's one of the first RPs I participated in, and I feel it was a big boost of confidence in general to have the GM be like that. Acknowledging everyone's characters even when they wanted to be the most special, and giving them more presence rather than just being participants of the plot. It was a fun time.