Stop doing the things that have been holding you back.
Stop thinking you're not ready.
Nobody ever feels 100% ready when an opportunity arises.
Because most great opportunities in life force us to grow beyond our comfort zones, which means we won't feel totally comfortable at first.
Stop trying to compete against everyone else.
Don't worry about what others are doing better than you. Concentrate on beating your own records every day.
Success is a battle between YOU and YOURSELF only.
worry about 担忧， 烦恼； 惦念； 挂虑；
You don't have to worry about me. I'm a good swimmer.
They no longer worry about the homogenization of culture.
All kids her age do silly things; it's nothing to worry about.