This gal’s light-years ahead of me in the writing career game, but I agree with her reasons for not chasing bestseller lists:
I’d much rather be beavering away on the latest project for readers than stressing out over some arbitrary list that’s probably reflective of the opinions of East Coast publishing houses (Found via http://kriswrites.com/2017/03/29/business-musings-bestseller-lists-and-other-dreams/ ).
One’s mental health is important! Remember, you don’t need someone else’s stamp o’ approval to be a writer! Just write!