I know of a couple of people I've met throughout my short time on this Earth who've made the case that they weren't ready for bigger and better things. Getting older isn't giving everything up, it's more about doing bigger and better things with your life. Change isn't to be feared, it's something to be embraced.
It may not always be what you expected, but there's no wishing the changes away. You can only go with the change, and you decide whether you let it work for you or work against you. This will be different for any given person, given. But that's also a part of being older, it means you'll need to compromise at points in your life.
I wish I had the chance to tell some of my friends that. I wish I had the chance to tell them before we lost touch at different points in our lives respectively. But that is indeed the way life works, only in retrospect do we see with 20/20 hindsight. One can not live in the past.
One can only move on to the constant future which happens year to year, month to month, week to week, day to day, hour to hour, minute to minute, second to second. Remembering the past however is different than trying to create it. Remember the good that you had, say with your grandparents who may not still be around.
Do not forget your mistakes, that way you can learn from them. These are basics, granted, but one must always keep these things in mind. Being successful and happy lies within you, how you achieve success and happyness varies from person to person. These are things I am still finding out.
It takes time, there is no rush. But there isn't all the time in the world either. Food for thought I suppose.