A good glue can certainly make life easier. We all need to make repairs at some time; having the right glue on hand can eliminate frustrations large and small.
I found Beadalon G-S Hypo Cement in the jewelry section of the craft store. It was pricey for such a small tube, but I had a 40% off coupon. The glue comes out after a slight squeeze and is easy to apply. The needle-like tip places a small amount of glue in the exact location needed without any difficulty.
I placed the post of my stud earring in a bristle brush while it was drying.
The hardest aspect of using this glue was getting the cap wire back into the applicator tip. This glue is toxic if swallowed or inhaled. Keep off of skin.
I will keep a supply of Beadalon Hypo Cement on hand to repair jewelry and for other projects that need small amounts of adhesive.