This is how I feel about raising my children. Even when I'm inconvenienced or feeling over whelmed, I have to remember it's all gonna pay off in the long run. It's all about raising competent, caring, and successful adults.
This is a calming jar. Instead of timers for time out. Use this. Shake it up, and place it in front of your LO. Explain to them that when it's all shook up, that's how their mind is when they are angry/frustrated/over-whelmed. That sitting there watching all the glitter fall to the bottom will help them calm down, and when they calmed down they can see clearly again.