Although I agree with others that one can be spiritual doing everyday things, I also feel there is a real value in having a specific practice you keep up with. I started with Wicca five years ago, and I have observed every full moon since. There have been times I really did not feel like doing ritual, but I did anyway, and was always glad I did. It has a wonderfully cleansing effect for me, and I need that as part of my monthly rhythm.
You could also set aside an evening each week to work with tarot cards or runes.
Another possibility is expressing your relationship with your goddess through some creative activity - writing, art, music, or whatever works for you.
If you have any Wiccan friends in your area, they might help you stay dedicated.
There have been times when my spirituality has been really dynamic and exciting, and I feel totally energized and in love with life. It's easy to maintain a practice during those times, but much harder when I feel stalled out or depressed or just disconnected. At those times I remind myself that I am in this for the long haul; it's not a fad. I treat it as a kind of devotion then, like making deposits into the spiritual bank account. I treat my relationship with the Goddess like I would a marriage - sticking around after the courtship has run its course, sweeping the floors and doing the dishes, because I know that over the long term that sense of commitment will reward me with a richer life.