How to make Bourgie Blossom

Our bougainvillea is growing bigger and bigger but she has given up producing any flowers.  The reason is that we have been taking care of her too well.  She needs to suffer to the edge of collapse, she would then feel the need to reproduce and blossom.  The internet article (google knows everything!) suggested to dry her for days then water, prune her branches or even bend them into circles (letting her grow tall is not desired), she will then feel the stress.