There are many ways in which you can deal with stress and potentially reduce it.
You can try meditation - this kind of relaxation is known to help a person deal with this kind of a problem. Meditation may alter the brain's neural pathways, which in turn makes you more resilient to stress.
You can take deep breaths - if you focus on breathing properly, you won't give stress time to come and bug you.
You can try exercising - yoga is especially good for people who are stressed.
Eat better and healthier food - although this may seem irrelevant for dealing with stress, it really isn't - try it!
Start reading a book - this kind of escapism makes you feel better and reduce stress faster.
Hope this helps! :)