Hi,
There is no definite time for symptoms to occur or disappear. We just have to do the best we can to live a healthy, fufilling life.
Reading books, has alway's been very helpful for me. A book called The anxiety & phobia workbook, by Dr. Edmund Bourne, is very informative, and helped me understand anxiety, and how to deal with the challanges of anxiety.
Reading & answering questions in the workbook, really helped me relax.
Good luck to you !!