Take Heart in a Medical Profession
Medical jobs tend to be some of the most grueling and intense you can get your hands on, but they don't come without their rewards and "kickbacks"... if you will.
Dental Assistants and Pharmacy Technicians both work in the background of the Pharmacy or the Dentist's office, but many times those folks get the most interaction with patients. While you're waiting on the Dentist to come you have plenty of time to get to know patients and let them feel at ease. While the Pharmacist is filling prescriptions and dealing with all the professional haggle that comes along with the job you can get to know folks who are waiting at the counter for their medications. You know, they always show the Pharmacist in the TV ads for retail chains, but it's usually the Pharmacy Techs who you get to know the best.
Besides the obvious personal benefits of being able to get to know people and work in a friendly environment these jobs require very little training (and in some states none at all...so you need to check on that.) So, if you want to do something that makes you feel all "warm and fuzzy" you may not need to punt everything for a year or two just to get trained. That's a nice one ain't it!?
Plus, since you are working in a highly fluid job you can easily move into management and supervision which means you can go in the ground floor but make something of the job. A Dental Assistant might end up managing the whole office just because of their experience and know-how around the practice. A Pharmacy Tech could easily become the manager of the retail store at-large and work their way up the corporate ladder, but it all started behind the Pharmacy counter.
So, when you really need a change you don't have to "punt" everything...try out of these jobs that require less training...get a grant or a scholarship, do the little bit of schooling you need and then start your run to the top!