Sometjmes when people on here brag about how tame their snakes can get, I think it creates this idea that all snakes can be like that. That is not the case. Just like people some snakes are more skittish than others and will remain more skittish than others. Tough love is kinda mammalian proposition so that might stress out the snake before.
I think the thing that helped me get my snake used to me the most was covering the bottom 3rd of the front side of its tank with something opaque to give added security. You want to tame a snake, make it feel as safe as possible.