there's a difference if you're more worried about how others see you and if you internally believe it's wrong. if it's about others, I think the best option is reflecting if you want to have external approval, if you're scared of rejection and things like that.
if it's more about a belief, you'll have to question your religion and understand if th...... reply
if he's the nerdy type, a shirt with some theme he likes is a good choice. does he like to drink? you could give him a nice bottle. if he owns a car, you could give a scent product for it. if you know he likes something, like some sport, a shirt or a product inspired by that. if he likes to dress up, some acessory would be nice reply