Astrology, Spirituality & Alternative Healing

Also, you should not forget about the HOUSE placements of the New Moon and Full Moon (at the Full Moon, Sun and Moon oppose each other in opposing signs / houses) - and here I'm talking about the house placements as they occur in your own natal horoscope, and the life areas associated with them. Sign placements are general to all, but the house placement is specific to your own natal chart. Also, the DEGREE placements, not just which sign(s) but which degrees, is also important, especially if it aspects important or sensitive planets or points in your own natal chart, especially by conjunction or hard aspect (square, opposition, etc...). The planets affected or activated by these hard aspects will exert quite an influence. They say a Full Moon ignites the passions, and can even make men crazy - but this is only true if the particular Full Moon opposition is forming critical conjunctions or hard aspects to important planets or points in one's natal chart. If not, the Full Moon won't be that big of a deal, and you may even sleep through it. These are ways of making the New and Full Moons more specific and personal to one's own natal chart.

Regarding the New and Full Moons, I like the following verses from the Wiccan Rede:
"When ye Lady's Moon is New, blow a kiss to her times two!" - this is making a good wish.
"When the Moon rides at her peak, then your heart's desire seek." - in other words, the Full Moon is when the desire / energy of things comes to fullness and fruition.

In the diet and hygiene practices of yoga, there are what are called the "Ekadashi" days - Ekadashi means ten plus one, or eleven. Eleven days after the New Moon is about three days before the Full Moon, and eleven days after the Full Moon is about three days before the New Moon. Since the New and Full Moons are critical turning points in the monthly lunar cycle, managing one's vital energies at these critical times may be difficult. To purify and balance one's system about three days before the New and Full Moons, the yogi fasts on the Ekadashi or eleventh day of each lunar hemicycle. This purifies and balances out one's vital energies in preparation for the New and Full Moons.