Have humility. Older/more experienced/more convincing writers may offer rules and varieties of advice. Consider what they say. However, don’t automatically give them charge of your brain, or anything else – they might be bitter, twisted, burned-out, manipulative, or just not very like you.
Have more humility. Remember you don’t know the limits of your own abilities. Successful or not, if you keep pushing beyond yourself, you will enrich your own life – and maybe even please a few strangers.
Defend others. You can, of course, steal stories and attributes from family and friends, fill in filecards after lovemaking and so forth. It might be better to celebrate those you love – and love itself – by writing in such a way that everyone keeps their privacy and dignity intact.