At the start of every week, I spend around 30 minutes making a new music playlist consisting of around 20 songs on youtube. I then play this music with headphones in whilst working. When the music is being played, I'm very productive and I work really well.
If you are finding it hard to make a music playlist.. here is an idea, say if you like meditation music, you could type in on youtube "meditation music mix" this normally will bring up a ready made playlist which lasts around an hour full of music, this works with most types of music.
A couple of other tips to be productive -
1 - Don't have time wasting sites like twitter and facebook in your bookmarks where they can easy be accessed.
2 - If your using gMail, you can install the gmail plugin so you get a notification when you get new mail, this saves you checking your emails all the time.