That's normal. A consultant may be asked to teach employees any number of different skills.
That means making sensible predictions and setting goals for yourself, not just financial targets — though you should include those too. What this ultimately means is that every human on Earth has a current state of existence AND a desired state of existence, with a gap in between the two states.
Getting paid to give advice is quite affirming, and watching your clients succeed thanks to your advice is unbelievably satisfying. Quite frankly, this is a really horrible, emotionally draining place to be. Most times you will encounter a secretary or administrative assistant who has years of experience turning away cold callers like yourself.
No overhead to pay.
If you are lucky enough to have a very healthy advertising budget, remember that you don't have to spend the money on ads just because you have it to spend. Or you might want funds to spend on marketing and advertising, particularly if you're offering consulting services in a competitive market.
But your clients are unlikely to pay for you to go on training courses — that's an expense you'll have to cover yourself. Contact each group and offer your public speaking services.