No. You cannot remove achievements. You can remove the history of a game you've played if you have 0 achievements for that game. Other than that, you're stuck with them.
I get on with my day. If it's at night, I go to *****.
But like Icewater said, sometimes I have a strong creative drive afterwords. I write and edit music, and make digital art.
Wow... Just wow.
Yes. It's very different. And you'll not likely be able to hold your load for long. I'm afraid I don't have any advice for you. You're fucked... and by that I mean unfucked.