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Do I deserve my 1755 rapid rating?
In my experience as soon as I start thinking that I might not deserve my rating is when I start losing rating points. If you got there you’re capable of playing at that level. Confidence is key.

I just noticed that Kasparov is only credited with winning 49% of his games. Feel good about what you have achieved. You made it through try outs, you are in the minor leagues and you're just hoping to go to the Big Show. There may be only half a million people in the world that can beat you. Good luck. Excelsior!
Play for fun.