I keep wondering why some individuals feels like others success was just extremely easy, there’s no journey to success with out hard work, patience and consistency. Also it is never wrong to tell a friend how you earn, it is only meaningless that you tell a friend and then he turns it down feeling like your success flew from the clouds to you, so long as your income comes legally feel free to introduce your friends on the train to success.
Success is not easy for anyone because it doesn't come by itself except with more consistent effort and planning before getting it. And when it comes to telling friends about the level of success and amount of income, I don't think there's any need to make it public because you remember the other risks that can also arise through a friend. Because you also don't know what intentions are in your friend's heart after he finds out about your income and your way to become successful.
So it's better not to share this with many people, even if they are your close friends, because other things that you don't want can also happen to your own business. And you can also provide other options such as the best suggestions that your friends can try instead of telling them about the income you have earned. So it's better for you to just run your business diligently and if someone asks you about how to be successful, just give them advice or a little knowledge that they can develop themselves.