Let's say you are already behaving a little like the software developer you aspire to be. In case you hit a wall you put in evening time to read up, try harder, in order to keep up your appearance. This is what I mean by "fake it till you make it".
In case you are an astrologer or psychic, you pretend to know what's going on with your "patient", you pretend that you can help them with issues. If this is not working out you cannot (as I understand it) put in more of your time to get on top of things. This is the difference I think.
If I sell myself as the best Asp.Net developer in the world, and get hired to build a DotNetNuke eCommerce Site. Will my client kill themselves because I accidentally broke their website? Likely not.
A psychic could lead a person down a terrible path pretty easily, though.
A psychologist is trained, required, and regularly retested on their ability to spot potential troubling behaviors and report them.
But psychics are like, the manifestation of that mentality in its purest form, and it feels like doublespeak to turn around and say, “hey, that’s not 100% rigorous, don’t sell naive randos on it!”