2. Get some fresh air.
If you can take a walk or just sit in the sun, go for it. A breath of fresh air can help reduce your anxiety or depression. Sometimes when we are upset, we hold our breath longer than we should, so remember to breathe in and out.
3. Look for something beautiful right where you are.
Sometimes it can be hard to take in the golden light of a sunset or a spectacular view if you feel overwhelmed. If nature isn’t readily accessible, go to a museum or art gallery, the mall or even a parking lot—just to look—to bring a little light into your life.
4. Accept that the day is challenging.
Get some perspective on what’s happening by telling yourself that you’ve had days like this before, and things usually get better. Knowing that the situation is temporary will help you cope with whatever is going on.
5. Call a friend who might need a little cheering up.
Thinking about someone else helps to take your thoughts away from your own troubles, and helping a friend will make you feel better about yourself.

So, here is some evidence from empirical studies which suggest that positive self-affirmation practices can be beneficial:
If you fill your world with negativity they’ll be no room for happiness. Don’t let life just happen, take control of it. Make room for happiness by filling your mind with positive happy thoughts. Make it a habit to be aware of what you’re thinking about and keep your thoughts positive.
Every day your will power is tested. There’s always something that can easily derail your positive thoughts. At first it is difficult to maintain a positive outlook and keep your thoughts on track. But just like anything else, repetition creates habits, good or bad.
1. Don’t be hard on yourself.
It’s easy to beat yourself up when you’ve just found out that you made a mistake. But we all make mistakes, and making them is the one way to really learn about life and what works for you. If you learn from a mistake and embrace it, your day will be better—and so will your life.