This depends very much on you - your time, interest, or ability to focus. We’d normally recommend you do about 2-3, but if you want to less or more, by all means, do! 

Just make sure you don’t do too much at once so that the information and change in perceptions has time to settle, or if you do go through a lot at once, come back to it. This way you get the best out of the programme!

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