A Buddhist guide to overcome self sabotage

Does self-sabotaging instincts come from the ego? Where does the urge to self-sabotage come from and how to break free from this cycle? Here is what I found from the internet >*The cause of our suffering is clinging to what we believe to be our “self” or “ego.” When we feel unsafe or uncertain, our habitual defenses arise, and we tend to cling even more defensively to our ego. Self-sabotage is a defense mechanism of the ego to protect us from some sort of pain or suffering – it's our own survival instinct working against us.*