I think this depends how deeply into the field of "mental health" you want to go. I am going to steer away from the actual psychiatry/in-patient hospital type jobs. And there are two reasons for that. One, with your own background, whatever that might be, it could be that having the burden of others' problems could be too much for you to deal with on a daily basis. As an example, consider someone whose mother was assaulted/murdered wanting to become a cop. Sometimes, it's not a good idea. Not saying it's not, but I want you to be aware of the possibility.
Secondly, I think that all of us face varying degrees of issues with "mental health" as we go through life. Removing the stigma associated with asking for help is important. But, there are "coping skills" types of situations, just as there are the more complex ones that require medical intervention. I think the coping skills is just as important.
The people I have seen who have had a really big impact on kids have been coaches, ministers, scouts, FFA programs, etc. My son suffered from mental illness, and the person he ended up bonding with was a nextdoor neighbor who gave him odd jobs to do. Adults who are in a position to build a child's self esteem, and who the child trusts, can often do more for that child than a formal counselor would. I'm not sure how all this plays out as far as a career goes. Are you into sports? Would you want to be a HS coach?
The next question is one of salary. The "best" salary will not necessarily result in the greatest job satisfaction and overall happiness. Obviously, you need enough to live on and meet unexpected expenses. This is a combination of income/benefits/ and lifestyle. I've met some very affluent people who were not very happy. But, at the other end, a lot of social service jobs don't pay enough to support even a modest lifestyle.
Since you are in Texas, here is a website you may find useful. A word of caution. When looking at salary information, there is often a big difference between "median" and "entry level." Be mindful of these two terms. Entry level is often quite low, so some sites post "median" information instead.