Hair growth is not something you can speed up. Hair grows on average around 2-4 inches a year depending on the person. You can do things to make your hair stronger so it won't break as it grows. Condition it well and don't style too often or use blow dryers all the time. Curling irons and flat irons can damage your hair and make it break which will seem to slow hair growth.
I have found that the only possible way to make your hair or nails grow faster is to be more athletic. MOVE so that your body circulates more. Being idle will always slow everything else down. You will not see a significant change in growth pattern.... but I bet you see some.