Every successful human not only on steemit but in the life generally has a key secret which is called " hard work "
this is the main reason behind success.
also I see that you succeeded here because you don't work randomly because working randomly never bring success. but success comes to people who make a good plan for their work and follow this plan.
and I see that there are many other reasons which include " good content " for sure
but I can summarize all of the reasons behind your success in only one sentence which is :
you respect your users' minds, so they respect you back.
finally, congratulations for your great progress and good luck for more