I think there's a vast gulf between "repression" and "self-control".
I agree with a number of posters here that it's often necessary to change behavior to some degree when interacting with different people in different situations. It isn't socially acceptable, for instance, to speak to your boss the same way you'd speak to your children, or treat your mother the same way you'd treat your spouse.
Nonetheless, I feel that everyone has a core personality, something which is present in every social interaction; "repression" to me isn't social adjustments so much as rejection and denial of that core personality. Social adjustment might include manners, for instance, but repression is more like cutting off who you are at heart, for whatever reason. Manners aren't repression. Putting on a totally false front, acting like who you really aren't, that's repression.
If I can take it as read that this kind of repression is what the OP is talking about - yes, I have repressed myself to please other people. I did it as a way to try to survive being raised in an abusive, alcoholic household. I spent a lot of years trying to play the good little fundy daughter, then later the good little fundy wife. It wasn't until the insanity of it drove me close to suicide that I realized y'know, this ain't healthy.
That wasn't an issue of manners or appropriate behavior. It was a matter of murdering my own soul in order to try to be someone who other people could love. When I figured out that it was a total lie, and that it was probably killing me to continue, I figured I'd rather live honestly and be rejected than live someone else's dreams of what I should be and die.
So I'm not like that anymore. I am the outspoken, imperfect, artistic, pagan, walking encyclopedia I always was inside, and was always meant to be. And I still adjust my behavior according to social interactions, but not to such a degree that my inner self does not come through any longer. And whaddaya know, some people like me, some don't, but it's all the same to me. And I'm not suicidal anymore, how 'bout that.
Thanks for reading.