What others say or do is a projection of their own dreams and their own insecurities. Once you fully realise that, you can let go and begin to focus on your own dreams and succeed.
It's never too early or too late to be someone of worth or to do something about your life. As long as you're alive, it's time.
Life is a big puzzle; put all your pieces together while you still have the opportunity to do so. Or regret it forever.
Life is a struggle. Life will throw daggers at you, and it will try to break you down at times. Sometimes when you think things are starting to look up, life will hit you back with ruthless indifference.