In other words, it's good to set goals and achieve those goals for every equinox and every solstice.  It's a nice way to set your life up, so you know that, "Well, I just passed the equinox, I have three months to the solstice, so in the next three months, I'm going to focus on ____, I'm going to accomplish _____."  You know, you have ideas like that.  Then of course, you do it.  And you're more apt to do it if you do it that way, because you're hooking yourself onto the power, and the power of the coming solstice or equinox, if you're aware of it, will enable you to accomplish more of those goals.

- Tantric Buddhism, Solstices and Equinoxes