Use timer - Set a timer for one minute, reading normally when time is down. When the timer goes off, note how many pages you've read.
Stop Internal Monologue - One's internal monologue, also known as sub vocalization, is an extremely common trait among readers.
Set a goal - Give yourself a target of a certain number of pages to read each day/week/etc, and stick to it.
Word-chunking - Word-chunking closely parallels the idea of eliminating internal monologue. This is the act of reading several words at once and is the key to speed reading.
Read more - The more you read, the better you will get at it. The better you are at reading, the more your reading speed will increase.
Don't reread the words on the page - Before we get to the peripheral vision part - this is the real kicker - you want to make sure you break the habit of rereading the words on the page.
Use a marker - Simply place an index card under each line, and slide it down as you read. This will ensure that you read one line at a time.
Use Peripheral Vision - Use all of the above techniques to see and understand multiple words at a time.
Read with a purpose – When you read with a clear goal or purpose, it motivates you to read. Especially when you're reading a self-help book, having some background questions can help you find your answers or insights more quickly.
Work on improving your vocabulary - If you work on improving your vocabulary, you will know more words. The more words you add to your repertoire, the faster you read.