So it's common practice these days (probably for the best) if we have a problem with our health, we see a professional. Whether that be mental, physical or otherwise. There is no shortage of methods, qualifications and options. What works best for you , you have to figure that out.
What I believe makes someone great - and by great I don't mean massively financially successful. I mean great at creating change in anyone they are able to guide , coach or 'heal'. Not that theres anything wrong with making a bunch of money, I mean that is why we go about what we do on a daily basis, mainly revolving around money.
But what truly sets people apart, and these are people you should seek or if your seeking guidance, or maybe even your looking at going down this path a career, I believe there are three factors.
Having experienced the same thing or similar : not to compare who had it worse (as some people do) but its much easier to relate to someone if you've been down that road. Myself I've been down many roads, good and bad , which I guess have given me the versatility to relate to alot of people about things.
Battle tested - its all well and good to have qualifications and a great attitude, but without the experience similar circumstances or on top of that not having gotten results with many , or any, people. Its unlikely that these are your likely to both achieve what you set out to do, at least not first go anyway. But thats good experience for both of you. But like I mentioned, if their theories and themselves aren't battle test, maybe shop around.
In it for the wrong reasons - Theres nothing wrong with wanting to make money, or be quite well off financial, I mean most people goto shitty jobs for the hourly rate, not because the jobs great, am I right? Be wary of people purely trying to sell you on something, if you feel their genuinely not putting your improvement/goal first. This is easier said then done. Most people who are good at what they do charge accordingly. But having said that there are many people out there charging you for basically nothing that will get you where you want to be, which is a shame because there is many other ways to generate income then play on peoples emotions and challenges.
None the less, I hope you find answers, I hope you find a mentor or coach, and maybe even you to can then pass that on to others. This is just my thoughts on what makes people great in self improvement industry.