I've been dealing with anxiety all my life. It's been a really long time, and finding out whether there is a source to it, say, school, relationships etc. or if it is inherent to you (you feel anxious no matter what....my case...in the beach, with friends) changes everything. If you have a case of baseline anxiety, you should seek medical help becuase it will drive you insane eventually and can have a really high cost in your life. I am now getting up from losing everything academically, financially and personally.
Don't be nervous about trips, etc...find ways to relax, maybe you need some time off.