“If the problem can be solved why worry? If the problem cannot be solved worrying will do you no good.”
“We have a saying in Tibet: If a problem can be solved there is no use worrying about it. If it can't be solved, worrying will do no good.”
“If a problem can be solved it will be. If it can not be solved there is no use worrying about it.”
“If a problem can be solved, there is nothing to worry about. If it can't be solved, well you can always buy chocolate :)”
“Don't worry so. Regret will only make you lose sleep, not solve the problem.”
“... a practical problem can only be solved by action itself. When your practical problem is how to earn a living, a book on how to make friends and influence people cannot solve it, though it may suggest things to do. Nothing short of the doing solves the problem. It is solved only by earning a living.”