Dating is a catch-22 for me and it all depends on how I am feeling about myself and my life.
When I am in a place of neediness, boredom or feeling like I am lacking something (which I often don't admit to until I am miserable and reflecting on my past actions)... dating becomes a high that frequently falls really fast and hard and leaves me feeling worse than I did initially.
Honestly, I have been in that place the majority of my life.
Currently, I am in a very different place and dating is easy, fun and full of interesting people. [Actually, I have a tea date with an interesting one tomorrow. He's an environmental investigative reporter for Bloomberg.]
What makes it different now: I am in an awesome place in my life and within myself. Dating is not a priority anymore. It is an extra-curricular activity that I could take or leave. I have made my life busy, fulfilling and exciting without a man. Therefore, I can be more objective and selective about any future partner, which I haven't been in the past. I am not looking for the high to fill the void anymore... the void doesn't exist, at least, not right now.
Does that make sense?
I think that if you are feeling a little scared and just not enjoying the experience... take a break. Spend some time exploring what you makes you happy (outside of a relationship) and doing things, perhaps even new things, that give you a sense of a more fulfilled, exciting life.
And, foremost of all... be gentle with yourself. Matters of the heart are always a bit complicated and risky.