David J. Schwartz
Find friends who breathe encouragement into your plans and ideals. If you don’t, if you select petty thinkers as your close friends, you’ll gradually develop into a petty thinker yourself. Don’t let small-thinking people hold you back. Jealous people want to see you stumble. Do not give them that satisfaction. Get your advice from successful people. Your future is important. Never risk it with free-lance advisors who are living failures.