Embodied said: “..but for now i’m more concerned with the fears related to what can happen during our actual bhava”.
Any stress/fear that is in the mind is has its origins in dasa akusala. This may not be obvious. This is called “tapa” or “heat in the mind”. One really realizes the relief only AFTER one gets rid of it. This is the basis of Satipatthana; see, ” Satipatthana Sutta – Structure“.
More details in: “Sutta Interpretations“, and the first several sections of “Living Dhamma“.
It is relatively easy to abstain from killing, lying, etc. There are three harder aspects that people seem not to pay attention to:
1. Day dreaming or fantasizing about sense pleasures (especially sexual nature). These seem to be harmless, but can lead to so much “heating of the mind”; see, “Correct Meaning of Vacī Sankhāra“.
2. Getting rid of the 10 types of micca ditthi.
3. Controlling excess greed and anger.
When such thoughts creep into the mind, one should immediately get rid of them. That is the basis of Anapana and Satipatthana.
Embodied said: “I created a “mantra” (kind of) that i keep repeating : whatever “I” am, this body is but a transient expression of such “I”.”
Chanting by itself will not work. That can keep the mind off of such “bad vaci sankhara” only during that chanting. One needs to keep such vaci sankhara from creeping in to the mind at all times, whenever possible. Initially hard, but will get easier with time.