The use of a mantra for meditation can be a very personal choice.
Some practitioners may advice to keep it simple, others may advice to seek the mystical, yet others may say it doesn't matter.
The choice is really an individualistic preference.
The goal is to use your mantra as a vehicle to get you to your destination, and that is to the point of transcending thought.
The point where there is no sound, no visuals, no smell, no touch, no taste, the place beyond the physical senses.
If you feel uncomfortable with the mystical practices of some meditation philosophies, you may want to try these simple one-syllable words as mantras.
With your eyes closed, try some of these and feel what happens.
Not verbally, but in your thoughts, say a word with each inhale, then the other word with each exhale.
Here are some very simple examples: o Peace (on inhale) Love (on exhale) o Calm (on inhale) Now (on exhale) o Yes (on inhale) Love (on exhale) o Earth (on inhale) Life (on exhale) o Moon (on inhale) Stars (on exhale) o Love (on inhale) God (on exhale) Of course, you have the flexibility to create your own one-syllable pair of words to come up with your very own mantra, but make sure that you are comfortable with the words you eventually settle on.
It's very important that you use the same word or words that you choose for anchoring your meditation practice.
It may take a few days or weeks to settle on one pair of words, but when you decide on a pair, stick with it.
While meditating with your mantra, you will notice that your thoughts may come prancing in, (and they will) all you do is very gently, go back to your mantra and keep going.
Don't stop to analyze the words or their meanings, this will detract from your purpose of meditation.
With practice you will begin to see positive changes in your level of awareness and your inner peace.