No one can MAKE you angry or sad or happy. They can be an external cause, but ONLY YOU can decide how you feel and how you will respond. YOU are in control of YOU. You are solely responsible for your own thoughts, emotions and actions.
It's nice to be reminded that we are in charge of ourselves, mind, body and spirit. Our lives can be whatever we want them to be. We are even in control of our interactions with others- we decide how to react. No one can make you happy or angry, it is up to you to decide how you wish to react in any situation.
If we find we are suffering in any way, we have to know that, that too, is a choice.
"But there is really no reason to suffer. The only reason you suffer is because you choose to suffer. If you look at your life you will find many excuses to suffer, but a good reason to suffer you will not find. The same is true for happiness. The only reason you are happy is because you choose to be happy. Happiness is a choice, and so is suffering." Don Miguel Ruiz
"Happiness is a choice, not a result. Nothing will make you happy until you choose to be happy. No person will make you happy until you choose to be happy. Your happiness will not come to you. It can only come from you." Ralph Harston
So you see, YOU are the boss of YOU. If you wake up in the morning feeling sad or depressed, you are the only one that can do anything about it. Maybe seeing your child laugh will give you a temporary boost, but it won't last. In order to create a lifetime of happiness you need to renew the decision to be happy each and every day.