Well, if you can only last for 10 minutes or less, you've gotta work up to the full 20 minutes. Don't add too much time at once, but use both attachments every day and add at least one minute per day. If you find it difficult, you say you like bondage: find a way to bind yourself so that you can't move away until your planned time is up. You should be doing 20 minutes with both attachments by the time two weeks is up.
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