The most difficult thing for us was leaving the kids and grandkids when we went full-time over a year ago. We still miss them but can deal with it because of the things that we have seen and the places we have been.
We went back to the home area for a month to be near them. We maybe saw them three times. All are busy with their lives. Use Skype. Use Facebook. Use text messaging but see all that you can. Do everything you want because there are no guarantees for tomorrow.
Live it up, the meter's running!