The Vipassana Strong Determination.
A thought in my mind is to set the rules for the vipassana is arising, I will go there tomorrow and it will last for the next 10 days.
The first simple rule is to eat the amount that is just enough for the survival of the body, not for the mind, be mindful when you are taking the meal and take less if you need more go and take it in the next round. Never take twice because of the taste.
For the sitting, there are 3 sittings, first two hours and then 3 hours and then 4 hours, and then last one for one hours and so on. I have done 3 and 4 hours before, make sure you go the toilet before sitting, and only get out if you are feeling excessive urination.
In this period you will feel the mental challenge of different impulsive need to break this rule, but It is doable, I have done before, and people like goggins have done it on the crazy level. observe this rule. In between sleep and rest.
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