"When three or more planets aspect one another mutually, they form an aspect structure, of which there are several different types. These are usually three-sided triangles or, less often, four-pointed structures, and even less often, more complex ones. Any structures forming in the heavens at any time indicate a temporal power-point, where a dominant chord sounds which has a very strong signal.

"The Grand Trine is supposed to be “lucky.” The problem with “luck” is that people can blow it. If there are too many trines in a chart (it doesn’t matter if they are in a Grand Trine or not) there is usually be a tendency to take the easy way out, to let your life drift. 

A T-Cross can get you moving. Grand Trines can also get you moving --- to bed.