Here are some things I use to manage anxiety:
-Vigorous exercise of 30 to 60 minutes a day (preferably cardiovascular in nature)
-Eating a balanced diet with plenty of fruits, vegetables, grains, oats, etc.
-Reduce caffeine and alcohol consumption (In my case I don't drink any alcohol)
-Setting up routines and habits for daily, weekly, and monthly basis
-Breathing and relaxation techniques
-Squeeze stress balls-Affirmations and visualizations
-Seeing a counselor on a weekly basis
Re posted with permission from Scott Michael Robertson, Autistic adult and Vice President of the Autistic Self Advocacy Network.