It's truly a personal decision but there is abssolutely no bad luck connected with charging. People have been charging for readings for hundreds of years in one way or another. You are providing a service, taking up your time, and using your skills.
Many people will say, you've been given a gift and shouldn't abuse it by charging. Well many people have been given a gift and that is how they make their livelihood. consider the person with the gift for numbers using that to be an accountant, the person with the gift for teaching becoming a professor and the person with a gift for sports playing pro football. they were given gifts also, and no one complains they are being paid to use them.
If you get someone who says you shouldn't charge, simply say "oh i'm doing your reading for free, but you are paying for my precious time and the skills I have taken time to develop in order to give you this reading"
I do want to add that I have been charging for readings for the past five years. I don't feel as if I've had any bad luck. Have things been up and down in my life? Sure, it's life lol. but none of that has to do with my readings. I'm providing a service, and I feel a positive service; I don't see how anything positive could bring you bad luck.
x