Surround yourself with positive people who will lift you up and make you better. Another version speaks about surrounding yourself with people who are better than you; this makes it a lot easier to continue to grow and develop into a better person.
“Keep away from people who try to belittle your ambitions. Small people always do that, but the really great makes you feel that you, too, can become great.”
Mark Twain (1835-1910) ― Author