Seeing the limitation of mental understanding, is the beginning of spiritual understanding.
Self-knowledge (para vidya) means, isolating your Pure Consciousness from the mind. Worldly-knowledge (apara vidya) means joining your Pure Consciousness to the mind.
Sanyas means you are not looking forward to your future nor ruminating your past ! This is what is called “being here and now “.
If you are taking formal sanyas, it is only to give up the idea of past and future and get fully established in the here and now.
If you are not taking formal sanyas, still the idea of past and present has to be given up and it will be no different than formal sanyas !
Sanyas really means fully realizing that you are actually outside the clutches of mind and therefore have no need to seek permission from the mind which it will never truly give ! Any permission from the mind is still part of the mind ! 🙂