A Health Psychologist is somebody who has studied and practiced enough to become a psychologist, get into your mind, understand your problems and provide you with suitable changes to your lifestyle to change that.
When a health psychologist suggest certain lifestyle changes they could ideally include taking up some form or the other of meditation. If they have the license to prescribe you with medicines then they may provide you with some mood stabilizing tablets that will help keep your anxiety or panic attack and general levels of dopamine and serotonin constant in your body.
When you visit a depression therapist, it is mostly likely that you have accepted that there is something going on in your mind that you would like to fix. Something that is subconsciously bothering you on a chronic level which is making you unhappy all the time and you have taken the first step in deciding to visit a depression therapist.
When you visit a health psychologist, no matter how old you are, it is beneficial for you. You need to feel like you are in a safe and secure environment. This is that one office where you can talk as much as you want without being judged. Infact the more you talk the more beneficial this therapy session is for you because you are now with a health psychologist that has undergone years of training to counsel you. You will be completely heard and members from your family may be involved in order to help you feel better and overcome your problems.
It is very easy to speak to a depression therapist and there are many people that speak of success stories where they have overcome their depression and anxiety issues and have gone on to become successful in their lives.