I chose a celtic symbol, The Spiral of Life as my logo
The Spiral of Life; The tri-spiral, otherwise known as the "Spiral of Life", is found on many ancient Irish stone carvings - the most famous of which is Newgrange, found in County Meath, Ireland, which dates back to 2500 BC.
Most scholars believe the spiral of life represents the cycle of life, death, and rebirth. Others say this deeply mystical symbol represents the male, female, and child on the path of life. Another interpretation is that it also represents the Triple Goddess.
My favorite interpretation is that the triple spiral of life represents the Eternal Truth, that the meaning of life is to find harmony between the three dimensions of our existence.
Perhaps you may enjoy reading about celtic symbolism.
Symbolic Spiral Meaning
Perhaps it's most prolific appearance is in Celtic symbology where we see the spirals decorating a myriad of their ancient artifacts. In Celtic art and symbolism, we can intuit a few meanings from the forcefully present spiral...
In terms of spirituality, the spiral symbol can represent the path leading from outer consciousness (materialism, external awareness, ego, outward perception) to the inner soul (enlightenment, unseen essence, nirvana, cosmic awareness). Movements between the inner (intuitive, intangible) world and the outer (matter, manifested) world are mapped by the spiraling of archetypal rings; marking the evolution of humankind on both an individual and collective scale.
Moreover, in terms of rebirth or growth, the spiral symbol can represent the consciousness of nature beginning from the core or center and thus expanding outwardly. This is the way of all things, as recognized by most mystics.
Some of my other favorite celtic spirals are the single spiral and the Triskelion spiral.
The single spiral is fairly common and may represent growth, birth or an expansion of consciousness.
Triskelion - The triskelion, was a prominent Celtic symbol that represented the the concept of completion and progress. The symbol looked like a three legged wheel. According to the first derivation of the meaning, the triskelion, represents actions, cycles, progress, revolution and competition. In all, the triskelion was a representation of a sense of advancement.