Do we control our own destiny ? To what extent

I think we have a majority of the control in our destiny. Generally by the choices we make and the company we keep around us. Based on our decisions we make change the outcome of our life. If someone chooses to hang around mostly violent people who aren't about a positive lifestyle then that person will soon adapt to that negative life. If you surround yourself with positive people who are focused then you will adapt to a more positive lifestyle there is this quote "Show me who your friends are, and can can show you who you are" and that pretty much sums up what i just said. And another way we control our destiny is based on how hard we work for what we want or pretty much whatever we value in life.