When I read the topic, I wanted to give an affirmative 'no,' but now that I'm sitting here actually writing a response, I have to say I'm not too sure. There are caveats.
I don't think our lives are mapped out for us, per say, but to a degree, our habitual thoughts, actions and the choices and consequences we make in our daily live kind of lock a certain future in place for us. Heck, as we all know here, our personalities don't really change over the course of a lifetime, so what we're able to do and not able to do (or rather think we're able to do and not able to do) kind of does narrow our options and put us on a certain path. I suppose, in a way, that could be construed as a kind of 'destiny.'