Well this is the crux of things, isn't it? If meditation was a solution to our negative tendencies, the Buddha would have never left his original teachers.
What the Buddha discovered, and what sets him apart from the other yogis of the time, wasn't that he used meditation to achieve some state or to feel better. Uniquely, the Buddha leveraged his bright and purified mind for the purposes of uprooting his obstacles and habitual patterns.
When you emerge from meditation, rather than indulging in those feelings of bliss, you would be much better served observing those desires. What are they? Why do they appear? What are their roots? With your brightened and purified mind, removed from your conventional ways of thinking, you are in a much better position to discover the answers to those questions and, with time, you might be able to disentangle yourself from them for good.