Changing careers at a certain age(that too sth as young as 30) is hindered more by mindset and years of stereotype we have been believing. How well travelled y

Changing careers at a certain age(that too sth as young as 30) is hindered more by mindset and years of stereotype we have been believing. How well travelled you are? Around the world. Do you think about such things because as you see you are 30 :-) PS. Does "Bio phd + 2 year" meant you are a PhD in Biology or related stream or it was supposed to be "Bio: " as in Biography? Just curious as you have mentioned web work and later "no tech background. If yes, why so?