The other very important thing with discerning and deciding finally, is commitment. Once you have made a decision and set out on that path of discernment, you are not yet fully committed but still discerning. Once one is married, in the priesthood, final vows in religious life or private vows (depending on what the private vow or vows might be), it needs to be resolved inwardly that it is a commitment come what may. Grace and The Lord will be on your side no matter what unfolds. Some do leave these vocations after finality and The Church has a process for each - and Grace and The Lord is on your side.
po18guy: your vocation is not an emotion-based decision, but a rational, logical and spiritual one.
I really liked the post by @po18guy and it is very true that we will not be the same as yesterday, today or tomorrow - God’s Will is forever an unfolding matter in the small and in the great, in the minutes, hours, days and years.
Growth means change. The bud changes into the flower. The caterpillar changes into the butterfly. Healthy weeds poisoned grow yellow and die.
My body changes from womb to tomb. Change is all around us.
Growth is change.
Edit: With private vows in the lay celibate state at any stage and always, it is ALWAYS inclusive of being open to a call and vocation from The Lord into another state of life - and hence another discernment journey ideally only with spiritual direction.