Devoting time to personal development?

Sometimes I wonder if personal development is also a part of your job… should my company be responsible for my personal development or its my responsibility and duty to look at my personal dev.

during my first few weeks, we were asked to choose our technology path.. we were included in the discussions which would/could change the way we think about tech… about business… about companies.. about our own group strategies.. slowly as i grew up.. there were lesser interactions with higher ups.. sometimes due to lack of time.. sometimes due to negligence..sometimes because of some assumptions that company would take that up..

i am not sure now….

i dont know whether i should take responsibility of my personal dev. or should i rely on my mentor for such things.. am i doing any mistake if i depend on my mentor for my personal dev.. after all he has much experience and is the gem of all mentors..

last night i was told [by someone close to me ] that i need to have a individual development plan.. IDP.. i should mention all the goals [both short term and long term] .. and how am i going to achieve them.. i should keep track of each of these tasks/goals.. and keep monitoring how i go about achieving those goals.. it sounds great.. but in reality that would depend on so many parameters [some might not be in my control].. but nevertheless i should give this a try..