This happens to all of us. Even with our Pastors, because as humans there is so much going on around us to distract us. Even with a Devotional, we will be distracted.
So, the first thing to do is not be so hard on yourself and relax.
Just flow with the Holy Spirit. Ask Him to lead you to where He wants to speak to you each day. It may be one verse, if it is just meditate on it; highlight the scripture and make notes in your Bible how the scripture speaks to your heart.
Start with reading one of the Psalms. They minister and quiet the soul.
Write down scriptures that you hear in church or from a message then go back and read it for review. It will lead to another scripture and another.
Right now in our Bible Study Class, we are focusing on The Purpose Driven Life by Rick Warren. And guess what? He has several resources which you will find very helpful.
Here's the website of all of his materials
http://www.purposedrivenlife.com/category.aspx?SID=1&Category_ID=68&Page=1
Here's a Bible Study Help - Just for you
http://www.purposedrivenlife.com/productr1.aspx?SID=1&Product_ID=278&Category_ID=68
You can also sign up for his daily email devotionals: While at your desk, you can be blessed.
http://www.purposedrivenlife.com/devotional.aspx
Here's one more, a FREE online Bible Study Guide. You can select from a 30-day to a 1 year format with a guide listing scriptures to study. The link below is for 30 days; but you can click on the link 'Free Tools', scroll down and you will see the selection for Bible Study online.
http://www.purposedrivenlife.com/freetools/
No matter what, even if you read just one scripture for an entire month, the Word of God will always come alive with newer and fresher revelation each time, because God is speaking directly to you...Yes, You...
Enjoy your special time with Him...