How to get over habit of seeking validation. Is it bad habit or is it normal.

To an extent it's normal, but is unhealthy, I would suggest seeing what others say for good or ill to be wholly insufficient to base the acquisition of new knowledge upon, the toil involved in sensing one's own value must spring from within, and not externals.

Well that's what I can say about it now, according to the measure of my understanding of this issue.