Meditation can be used for thrills, or it can be used to awaken to the truth of our Being and the underlying truth of ALL existence. It helps to be very clear on what your authentic and sincere desire is for....so we may have to first meditate on that.
For me meditation is about shinning acute awareness inward into what has been hidden. It's about clearly seeing what is True, and what is smoke and mirrors.
Who/what am I, really? What is the actual foundational Beingness and Reality of all things? What is true??? It is questions like these that I enter into deeper meditations (other than just being consciously present of the present moment, which can be seen as a meditation too). If I am to discover truth it seems very important that no stone be left unturned, and no thing left unmet and unexamined.
For me, deeper meditation is a time to put up ones sword, surrender and nonjudgmentally meet with whatever the universe presents. What unites what we would call "good" and what we would define as "evil"? What is the foundational reality of everything? Is there a Oneness which dissolves all duality?
It has been said that: "when you can look the devil in the eye, and clearly see the Christ, you are home, you are seeing truly and clearly." Meditation is different for everyone; for me the most terrifying moments ever experienced have occurred in meditation. It seems it is the darkness which most hungers for the light of our conscious and nonjudgmental acceptance and embracement. Often it is the demons which haunt us and from which we run away, that are actually the doorway to Truth and understanding of the Oneness which unites us all.
Good luck.
j