@anonymous92 you're right, the fear of losing our dear ones can lead us to depression and the truth is I've also been there.
Let me tell you a short story and how I managed to get out of it...
I was born an extrovert but lived like an introvert for years because of circumstances and fear of the unknown, I'm also an extremist so when I care about someone I could go the extra length to do anything for them.
My life as an introvert sucked big time I can tell you that, I didn't have much friends because I was scared of being ridiculed, talked down, laughed at etc. I was a smart kid but no one would know becos I didn't look like one or even spoke like one, I excluded myself from the world and built a shell around myself, I thought I was doing the right thing, I thought I safe guarding myself but I clearly was punishing myself for my foolishness.
After years of being in the bondage I created for myself I happen to meet someone one day who became a good friend. We became really close because we understood each other so well that even our families didn't understand us that well. I knew her shortly before she got married but I was there for her, I stayed with her when her husband got transferred and she was alone, I was there when she gave birth to her very cute son, I helped her so much like she was my blood sister, took her son like he was mine and we were just always happy until one day they had to relocate and so did I, and that was the beginning of our separation.
We always had issues but solved them when we were together but when we separated the issues became worse as though we never knew each other. A lot of misunderstandings and problems,...it became too much....to cut the long story short,..today we nearly even speak to ourselves,....we grew out of our friendship and now we don't even know who we are.
The truth is, people will come in and out of your life but it beholds of you to maintain and control what they do with your life and how you let them control your emotions.
She helped me become who I really am (an extrovert) and that I'm forever grateful for, and I really wish I brings us back together again but I have tried all I possibly can but nothing worked.
Something's are better left alone, if its meant to happen again nature will find a way to make it happen.
Try not become too emotional when it comes to people, try not to become too attached, too expectant, those things hurt a lot and can lead one to intense depression.