I know what you mean. What I have done is night after night I pray for the all desires that God wants me to have...putting all my own personal desires of the flesh out of the way. Making my desires, Gods desires (My will = Gods Will) Try just reading a little bit of the bible each night before you go to bed, even if its just a simple verse at first, even if you don't "understand" it, that is OK. Pray for that God gives you understanding through His Spirit, like He promises, and know God answers in His time.
What I do sometimes is I go to
www.biblegateway.com and HEAR the bible being read. Through doing this after awhile it will be second nature, and you will CRAVE knowledge from God, making you WANT to read the bible, and pray and all the other wonderful stuff you can do to help your walk with the Lord. I have several resources I use to keep me motivated in the Word(but give fully credit to the Holy Spirit). And even though at first it was hard to get into it, now some days I litteraly spend from the time I wake up to the time I go to bed in Study (but with breaks to eat and such)
Another thing, the BEST time to dig in the word is when you LEAST feel like it

, this is what builds discipline.
Yes getting in a GROUP bible study is good too, even though i have not found a good one yet around me. But still am praying and looking for one.
Hope this along with other responses are helping
all in all , it is the Holy Spirit that gives you the desire to dig in the Word.
email me if u want some resources/web sites to use to help
with love from our Father,
Donald