How to make ceramic tile to stick to the ceiling?

This is always a somewhat difficult task. The bigger the tile, the harder the job. I'll guess this is in a bath or shower enclosure-yes? The coefficient of adhesion must be higher than the pull of gravity, basically the weight of the tile. There is no quick and easy fix. I use Acryl Pro, put it on the Hardie per the tiling instructions regarding what trowel notches to use, set the tiles firmly and then use a padded support to hold them in place for a couple of hours. You can usually set about 4-5 lineal ft.this way. If you are very accurate with layout and cutting, you can work from both ends but constantly measure and adjust so your last tile fits. Make sure all the tile is well set and then grout, another messy job since it always falls down on you. Take your time, let set well and you should be able to do this job.