I'm fairly new to SteemIt. My best advice to anyone here: be yourself. You know what you know. If you try to blog about something you aren't knowledgeable about - some other blogger with more knowledge on the subject will easily out-blog you.
Nobody is a better expert on you than, you! So, just tell us Steemians about you, your life, your experiences, your thoughts, your perspective. As in everything, some people will like you - and some won't. Take the good, leave the bad. Otherwise, be consistent in posting once or twice a day - or you won't become known. And, reply to other people's blogs. Reply, reply, reply. You can actually earn good rewards just for making good comments on other people's stuff.