Love for children is one of the most natural and noble feelings. For some parents, it is so strong that any separation from the child, even a short one, is very painful. For some fathers and mothers, this is very difficult, they feel empty, nervous themselves and make their children nervous with constant calls, instructions by e-mail, Skype, etc.
Try to convince yourself that even parental love, if it takes excessive forms, can harm not only you, but also your children. It is only natural that you miss and worry about your offspring, but you must not allow your feelings to turn into a real obsession. It will not be good.
Reassure yourself with arguments: these are not the old days when exchanging letters took weeks, if not months. Nowadays, you can always contact children. There are mobile phones, internet and other means of communication. But don't abuse it, give your children freedom. If your child needs help, he can contact you at any moment. And throwing him every day with endless questions like "are you all right" and the same endless instructions should not be. You don't want your child to feel painful about communicating with you, do you?
Remind yourself that you yourself wanted your children to study, get a good education, or just relax. If for this they had to leave for another city, then it must be so. Would it really be better if they remained under the "parental wing", depriving themselves of prospects, just because mom and dad are so calmer? Parental love should be neither blind nor selfish.
Inspire yourself that your children, living without everyday parental care, are likely to become more experienced, more independent and more adventurous. These qualities will be very useful to them in later life. You hardly want them to be timid, indecisive, unable to do anything without parental support.
Try to fill this void with some new hobby, hobby, or job. Get out of the house more often, attend concerts, performances, that is, cultural events. Dedicate this time to yourself.