One of the challenges of anxiety disorders is that they are treatable but chronic. Like motrin which may make the pain of an ankle sprain feel better but not completely resolve the pain, medication may not get you feeling "100% like you"
Other management techniques such as stress reduction, therapy, exercise, mindfulness, are important too. in terms of the sleep moderate exercise (during the day, not at night time) may help you sleep better. So may chamomile tea, warm bath or relaxing music.
And sometimes too, it can take trial and error to find the right medication: balance of benefit and side effect.
Good luck :)