Focus holds me back a lot. I catch myself talking to myself in my head a lot and mumble up the conversation in my head with the text. I have had some success at speeding up by pointing with my finger so I don't lose my place on the line but even when I'm alone I feel self-conscious about doing that. I've tried audiobooks and I did find this really cool thing called libravox that has nearly all the classics available for download for free. I play them at 1.5 speed while I walk or run in the evenings and it has allowed me to make progress on several books at once.