Need information on how masturbation alone (without porn or visual stimulation) is harmful

I had been clean for 4 years until september of this year, then relapsed.
Now i have relapsed again because of stress and because i lashed out internally about proving myself that i have not selfcastrated myself.
Someone badgered me about becoming a priest because i am so virgin-like.
I really want to have a family ans have a healthy relationship with catholic values but not spend all day worshipping god and being a celibate like a priest.
Need cold hard truths to stop myself from relapsing. 3 times in 2 days, i want to go back to the mental state where i could say no to this and ignore how others judge me.
Unlike years ago i dont see porn anymore and i dont see women with revealing clothing but i am still weak mentally. Of the pmo, only the m.
Slash me with such hard truths about fapping that i dont fap anymore