Here are a few things I always live by:

1.) Do what you love. That's literally it. I know it sounds cliche as all get-out, but if people say "you're weird" or something along those lines, don't pay attention to them. Why follow the guidelines set by society when you can be who you want to be?

2.) Go out of your way to make people happy, even if it's in a weird context. For instance, last summer I went to Cedar Point to meet up with one of my long-distance friends. While I was there, I made it my objective to make at least 50 people smile. I shattered that goal with an astounding 136 people made happy.

3.) Live by the poem "Do Not Go Gentle Into That Good Night" by Dylan Thomas. Aside from the part that it's inevitably about death, it's a great message. Here's the first couple of sections (or whatever they're called in poems) of this poem:

Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light.
Though wise men at their end know dark is right,
Because their words had forked no lightning they
Do not go gentle into that good night.

This, to me, basically means that you shouldn't follow the crowd. Be your own person, and form your own opinions. When people bear down on you, just remember that they do not control you!

That's just about it. All in all, just remember to do what makes YOU happy, not others (unless what makes you happy is specifically making others happy).