Life is too short to spend your precious time trying to convince a person who wants to live in gloom and doom otherwise. Give lifting that person your best shot, but don't hang around long enough for his/her bad attitude to pull you down. Instead, surround yourself with optimistic people.
Zig ZiglarYour mate doesn't live by bread alone; he or she needs to be 'buttered up' from time to time.
Zig ZiglarHappiness is the ability to move forward, knowing the future will be better than the past.
Zig Ziglar