We suffer one of two things. Either the pain of discipline or the pain of regret. You've got to choose discipline, versus regret, because discipline weighs ounces and regret weighs tons.

Discipline weighs ounces and regret weighs tons

If you spend five minutes complaining, you have just wasted five minutes. If you continue complaining, it won't be long before they haul you out to a financial desert and there let you choke on the dust of your own regret.

Until we have finally accepted the fact that there is nothing we can do to change the past, our feelings of regret and remorse and bitterness will prevent us from designing a better future with the opportunity that is before us today.