To the reader:

I wouldn't suggest using any random word as a mantra. A mantra is a word we repeat during meditation, we do so because the word has some sort of effect on us, our subconscious, our consciousness. Instead of choosing a random word, read up on mantras, and choose one that is widely used or that is recommended. Mantras are used in many different cultures, you shouldn't have a problem reading up on them. Good luck and enjoy!