Each one will make you stronger, even though it may be hard for you to realize it at the time.
Life is your classroom in which you're being tested, tried, and passed.
Always try to stay in the midst of life and activity. Don't isolate yourself from the action. Your character develops itself in the stream of life.
The setbacks and hardships you endure actually help you in your march forward to success. The world was built to develop your character.
But, life expects you to make progress in reasonable time.
That's why those third grade school chairs are so small.