Don’t hold grudges.

Researchers have found that stress levels and blood
pressure go up when we’re angry and go down when
we forgive. In some studies, forgiveness is also linked
to less back pain and depression. The ability to let go
of anger and resentment is one of the best predictors
of good health well into old age.
• Decide to forgive someone. If you have unresolved
anger toward someone at work or in your personal
life, try to make peace with the person. Write the
person a letter. Or call to talk or meet in person to
resolve old issues. If that’s not possible, decide to let
go of the anger that you’re holding inside and to
move on.
• Forgive yourself. Blaming yourself for things that went
wrong is just as unhealthy as holding a grudge against
someone else.