運 --You can use this one for luck that is neither good nor bad, as in someone's fortune, or the luck of the draw. Alternatively 運氣 is the full phrase for a person's luck.
幸運 -- as said above, this would be good luck.
福 -- For fortune, also like good luck. Often used for money terms.
吉-- Lucky, good luck.
thank you very much!!! so to say "I've had luck and I wish to continue to have it" what should I use for a tattoo?