Your part doesn't have to be as big. If it's intimidating to stand up to elected officials in person, you have the opportunity to stand up to them at the ballot box in November. If you are uncomfortable knocking on doors and canvassing strangers for a candidate, you can still talk to your friends and family about why it's so important to vote this year.
I believe in second chances. It's what we all want for ourselves. None of us want to be forever known for our worst moment. We all have the ability to move on from that moment, and the vast majority of us do.