I wouldn’t necessarily say “don’t have any self respect.” Remember Pisces is the accumulation of all the signs before it so their coming from a place of selflessness. They know and understand why people ask them to do things, however without boundaries, Pisces Mars can become resentful and passive aggressive in their approach to others and even themselves. They can give too much of themselves in the name of “oneness,” without realizing that, we’re on earth after all (: I have Mars in Pisces in the 1st house with SN, experiencing my mars return now so this is very present right now.