ALWAYS be confident in your decisions. Live life for you. If someone doesn't like it i guess they don't have your best interest in mind. only you can make the decisions that will change your life into what you want it to be.
Confidence is the ability to feel beautiful without needing someone to tell you. You should never NEED the affirmation from someone, except the person in the mirror, to remind you how beautiful you are.
"Admit when you're wrong. Shut up when you're right." -John Gottman (This man knows a LOT about what helps - and what hurts - relationships. He's done tons of research on it, read his stuff it's amazing.