It really does sound like a adrenalin addiction. Im a free skier that sksi very difficult runs and used to huck myself off pretty big drops, I was a big mountain snowmobile, white water kayaker, have jumped out of planes, have ridden enduros and motorcycles in some amazing places like moab, and liked the rush of illegal activities though I did not participate in criminal behavior just the drug shit, jumped off cliffs into water, scuba diver with many hundreds of dives.. so I get where your coming from for sure.
I would try and take up a few more adrenalin producing activities to avoid being so fixated on one. I would also try and develop, promote, and value a sense of balance in your life. Find and develop some interests and activities that are not crazy.
I like to balance all my adrenal activity with cultivating a strong relationship with my son through interaction and teaching, travel, academics, research, and learning, enjoying and creating art, attending and listening to music, cooking dope ass food, , meditation, exercise, family, helping others, volunteering, activism, sports like tennis and golf, writing, Bluelight, being a fan of my NFL team, a little gambling (I keep a close eye on that one), gardening, fishing, sex, dropped off with the girl I was seeing but when i run into another one then relationship stuff, weightlifting, movies and film, my profession when i finally get back to it.. etc etc.
I think its all about identifying a whole bunch of stuff we love. Then its about valuing the different experiences, enjoyment, and benefit we get from areas individually. Its about realizing that variety is really the spice of life, that we need not always be doing the things we love most, about looking for, finding, and allowing ourselves to enjoy different experiences in life. Then we need to consciously maintain a balance between them all. Sorta keep moving forward on all aspects in our lives instead of becoming so fixated on one we are really digging. So I like to have a whole bunch of varied awesome shit going on in my life all the time and then I really consciously work at enriching and partaking in all those aspects. I also have identified and appreciate the different benefits and pleasures I get from them all and I remeber to enjoy them.