http://jjb.yuku.com/topic/418982/t/New-tattoo.html
Its owner, LuvBug, said she got this exact tattoo along with two other friends and it meant "emotional and spiritual strength. "
Besides the obvious botchery of two characters, the phrase is not 100% grammatically correct.
In my opinion, the proper version should be 精神的力量 or 精神力量. However, Alan is much lenient & thinks 精神的力 is good enough.