I have my favorite perfumes but I also enjoy taking a break from the commercial perfumes and using essential oils.  Essential oil is readily absorbed by the skin, so just a drop or two will be absorbed throughout the body within 20 minutes and will last for approximately 2 to 3 hours.  On my day planner I clip a small prayer box with a few drops of  with my favorite oil of the day inside for a quick pick-me-up  during the day.
Scents that will lift your spirits:
Angelica for concentration
Basil to clarify
Cedar to cleanse
Chamomile to calm
Fennel to relax
Geranium for harmony
Lavender to soothe
Lemon to uplift
Lime to invigorate
Orange for sweetness
Patchouli for sensuality
Peony for beauty
Pine for longevity
Rose for emotional uplift
Sage to cleanse
Sandalwood for sensuality
Thyme to stimulate
Source: Feng Shui Chic by Carole Swann Meltzer, B.T.B. and David Andrusia