You're going to face times of struggle, it's inevitable.

Life will never be easy all the time. You will come up against stressful situations. Instead of complaining or becoming depressed about the way a situation plays out change it.

If it's something out of your control don't worry about it. There's nothing you can do so complaining won't help anyone especially not yourself.

If it's in your control instead of complaining solve the problem. Walk through possible solutions. Ask others for advice. See how people reacted in similar positions. 

Sometimes all you need is to pause and take a deep breath. 

Ask yourself: why does this bother me so much? Is there something I can do to change my situation? How can I solve this problem?

Complaining isn't the solution no matter what. 

Instead of reacting to the situation be proactive. Prevent these vents from taking place by preparing yourself.

Work your ass off to prevent yourself from worrying about being fired. Focus on what you can improve upon instead of comparing yourself to other people.

Don't take this issues so seriously. Shit happens. Take a minute to relax and then move on. Don't worry about the situation from there.

It's better to walk away and spend your available time on activities that truly matter.