you HAVE to face your problems/troubles/anyone with whom you have an issue/anything you've been afraid of/anything you've been putting off...
The only way you can be free of the bug that is bugging you and which comes into your mind on and off, especially when you are least expecting it to, and sometimes even when you are feeling all strong and top of the world, is to face it.....
It is a horribly difficult thing to do, scary even, and requires all, and maybe ten or hundred times more courage than you think you possess...
But once you pull it out from its hiding place or from the back of your mind or heart where it has lodged itself, square your shoulders (after all how bad can it get) and look it in the eye and say - 'All right, come on, let's finish with it,' you will see you have reserves of strength and courage you never knew you had, and you are able to deal with it.
And, free yourself....