My steem power

My steem power is still quite low no matter what I do. How do I increase it? I have been upvoting lots of other posts and resteeming. Is this helping at all? How many upvotes per day do you recommend? My steem pwoer used to be quite huge when I was able to borrow 30 day steem delegation now there is no 30 day. It has drastically reduced. Someone please help.