You can't make good decisions that are going to be meaningful, productive, when you lose control, and you have to maintain mental control, emotional control and to be able to perform physically up to your own particular level of competency; you have to keep your emotions under control.
You can't make good decisions ...
Quotes from the same author
Whatever you do in life, surround yourself with smart people who'll argue with you.
You can't let praise or criticism get to you. It's a weakness to get caught up in either one.
Never mistake activity for achievement.
Talent is God given. Be humble. Fame is man-given. Be grateful. Conceit is self-given. Be careful.
Be true to yourself, help others, make each day your masterpiece, make friendship a fine art, drink deeply from good books - especially the Bible, build a shelter against a rainy day, give thanks for your blessings and pray for guidance every day.