Just be yourself and do no wrong.
What do I mean by the second part? Treat everyone as you want to be treated. Groups being what they are tend to have cliques and then the resulting rumor mongering. Avoid both like the plague. Be true to yourself and do not sell out to be liked.
In so doing, you will be noticed as a stand up person. You will also never have to wonder if it is something you said or did. Try not to make it about you! If your side of the street is clean, then anything else is their crap.
All sounds cliche and contrite, but it is also true.
I used to walk around on egg shells all the time. My problem though is that I was agressive and controlling; I could not figure out why people were either afraid of me or did not trust me. When I let the "teddy bear" in me come out and be seen, it was amazing the different reaction I received from people.
When I quit demanding more from people than I was willing to give, that is when I realized my will and my life was being influenced by a power greater than myself - amazing how different things started to become.
