If I might humbly disagree: The only thing you need to do to sell consulting engagements is to sell consulting engagements. There is no licensing department, n

If I might humbly disagree: The only thing you need to do to sell consulting engagements is to sell consulting engagements. There is no licensing department, no exam, and no Client Cabal which requires that you be blessed by a gatekeeper prior to doing this. I spent years coming up with reasons why I could not sell consulting engagements. In retrospect, that was sort of silly. You know what I did when I was a Systems Engineer and had business cards saying it? I read stuff, talked to people, went to meetings, produced computer code which compiled, and wrote stuff. You know what I do for clients? I read stuff, talk to people, go to meetings, produce computer code which gets interpreted, and write stuff. I'm just really, really picky about what I'm working on. (See sibling comment by Thomas.)