@Testy - I feel your pain. Using smart phones can become very addicting. Trust me, you are not the only one out there who spends way too much time on their cell phones.
I have an Android phone, and I was on that thing all day, every day. I decided that I needed to change my habits, so I deleted some apps on my phone, thinking that it would force me to spend less time on it.
That did not work, so I decided to use only half of the EVDO capabilities, meaning I now only use my phone for reading and sending emails. It was a drastic step, but having the internet available on my phone was turning me into somebody I was not proud of.
If you do not want to get rid of your EVDO technology all together, then I would suggest changing your data plan. If your mobile service provider allows it, you can limit the amount of data you can stream on your phone each month. By doing this, you are not able to spend hours a day surfing the internet on the phone without paying expensive over usage fees.
I hope this advice helps. Good luck!