I like to wax my threads before I do any hand sewing. This is especially handy with conductive threads which are generally hairy and tangle easily. Taking a few minutes to wax thread is a major time saver!
Purchase a cake of bees wax from your local sewing shop.
Pull the thread thru the bees wax cake.
Place the waxed thread in-between two pieces of paper and place a hot iron on top of the paper to fuse the thread together and melt off any excess wax.