Sometimes I get scared that by the time I fully heal, I'll have lost too much of my life to this process. I get scared about losing the opportunity to meet someone new. Then I get upset for even wanting to meet someone new.
Holding what you are experiencing is called catastrophic thinking and it is all in your mind.
You'll go through the stages of grief (your in Anger now) and you will be fine. You will probably live another 50 years and I am sure you will find someone new.
The great part is you are learning many new relationship skills that will carryover into the future.