The subject of life after death and reincarnation is an abstraction of sorts for 'Self Always Is' (therefore transcending its own physical birth and death). It is perfectly normal to have anxieties. In fact; I've had anxieties most of my life. It is how I came to realize 'that which truly is'. I have come to the understanding that anxiety is self not knowing it is (it)self, i.e., it itself is the eternal one. Perhaps the following mantras can be helpful at times of distress (they surely have helped me): 'that which is eternally is', 'that which is, itself is eternal', or even simple ones like 'all is love' or 'all is always g-d' (for it is or it would not be). Does reincarnation exist? Of course it does. Self-reincarnates itself. In other words: Love never dies. It is as simple as that. I guarantee it.
~ Wald