I can't speak for everyone but I've found if you're good at what you do, and you have some skills in networking (e.g. the ability to meet for a coffee and demo

I can't speak for everyone but I've found if you're good at what you do, and you have some skills in networking (e.g. the ability to meet for a coffee and demo some of your work) plus the ability to recognise good clients then leads are generally the least of your problems freelancing.