If you are like me, you don't much (or, not for long) fear for yourself - but for those you love: essentially family.
Yet, fear is an evil; so we ought not to indulge this fear either - but should cast it out. But how?
The best idea I've come across is to focus on the knowledge that - because God the creator is our loving Father - he can and does ensure that all of us are able (at all times) to follow our divine destiny - and to prepare to follow Jesus through the transformation of death, and to life eternal in Heaven.
All means all; God never leaves anyone bereft (insofar as creating the world makes that possible) including those we love, and fear-about - so we should Not fear.
But this is a thing that each can and must only do for himself or herself - in this respect we are 'on our own' in an ultimate sense. We cannot - ultimately - protect those we love; so fear is futile.
That does not, however, mean that we are each on-our-own and unaided. As well as God in his continual work of creation, and the continual presence of the Holy Ghost (whom I believe to be the universal spirit of Jesus Christ) - love is a reality in creation.
(Love is, indeed, that which makes possible creation.)
I understand this to mean that real love (of specific persons) is a real factor in life, death and resurrection; in the sense that it is always there for those who choose to be aware of it. Those whom we love are therefore potentially able to know and benefit-from our love; they can know that they are loved by us at all times and places; in all situations.
And this is the best possible thing that we can do for them.
I find this reflection is often effective in casting-out my fear for those I love.