What you do as a person is only part of what shapes your character. Your sport, job and interests don't define you, but together they help shape you. It's how you love and act within what you do that truly defines your character and the person you are.
Too many times we deviate from our true selves in attempts to please a group or other person. These deviations are made to seek out short term pleasure or satisfaction, and ultimately can lead to poor choices. We have to choose wisely who we associate ourselves with, while being honest about how our decisions will coincide with our true character. Always be true to yourself and don't feel bad being different. When you try to act like others, you only put limits on yourself and your beliefs. We don't set limits.
Don't live someone else's life. Live yours. Be confident in who you are and don't look for validation from anyone. You are unique and different. Embrace that. Be confident you are doing it right and don't let others tell you otherwise.