The advice would be the same for any kind of fiction. Keep writing, and keep sending things out, not to friends and relatives, but to people who have the power to buy. A lot of additional, useful tips could be added, but this is fundamental.
My friends tell me that I've calmed down, that I seem more centered. I don't know, I think my inner self was more hollow before, which made me more scattered, and more needy to get laughs.