Now some basis facts about OBEs. 90% of people cant do them. 10 % of people do them spontaneously, accidentally. Some seek medical help for this alarming condition. Following the brain damage of his NDE, most famous Remote viewer, Joe McMoneagle did get medical attention to no avail, then went to Robert Monroe and he spent 18 months learning how to control the unnerving phomenon . It makes a lot of sense that we need to be firmly glued into our body for our society to work coherently, and simply agree on a perceived reality, even if its wrong. Consensus reality has numerous benefits. Like so many standardised beliefs.
The other biggy is that there is no one OBE method that works for everybody. Do try Robert Monroes simple technique. Its proven in many thousands of people. He also provides CDs of hemi sync brain balancing binaural tone sound tracks to assist the phenomenon. Just wear headphones.
Stick with the Monroe method for a few months. If it doesnt work try gnosticweb.com. A FREE online course where about 5 different methods are taught of achieving an OBE. Dont let the teacher's name Beelzebuub, put you off. Its only a name. This is a wonderful subject to dive into. And its theorised that what glues you into your body is ectoplasm. Deduced from obervations of some people dying that a cloud of steam or energy is seen leaving the body, rising, going thru the roof.