The B’nei Yissachar writes (Derech Pikudecha): “We have a tradition from our fathers that the Yetzer Hara desires more than anything to attack the person through sexual sins, because included in this lust are all the others.” And R’ Nachman also writes that these temptations are our main test in life.
It says in the Korbonos: “Zeh Ha’isheh asher Takrivu LaHashem” – “This is the fire that you should sacrifice to Hashem.” Isheh means fire, but it also spells Ishah, which means “a woman.” The biggest sacrifice that a man needs to make in his life for Hashem is zeh Ha’isheh – this desire for women and the fire of lust.
By working on these areas, we ultimately learn to give over our entire heart to Hashem, as the Pasuk says “Bechol Levavcha” – “with all your heart.” And Chazal say “Bishnei Yitzrecha – with both your inclinations.”
This is a struggle with the deepest human emotions. And therefore, fixing these emotions fixes a person deeper than anything else. That's why it's called Yesod. Hashem is not just telling us not to be dirty. Rather, he is telling us to build ourselves with the things we don’t do. The
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foundation of a building is underground and no one sees it, but it holds up the entire building. Shemiras Habris is the hidden part of a Jew, it's the real you. And if the foundation of a Jew is weak, his whole spiritual structure is fragile and in grave danger of collapse.
And not only are we fixing ourselves deeply through this struggle, we are also fixing the world. Every generation has its tests, and this is likely the test of our generation. There has never been a time in history where promiscuity and licentiousness filled the world in every corner to the degree that it does in our time. In the generation before Moshiach’s time, we are cleaning out the filth from the very bottom of the barrel. We are doing the final work before the great days that are to come.
Only great souls with immense potential were given this difficult job. So if Hashem gave us this struggle, it means he trusted us with a great mission. This alone should bring us joy and motivation to substantiate His trust. And, of course, if we succeed, we will be in the front lines to greet Moshiach!

this is the area where the yetzer tries the most to attack us. included in this challange is ALL other challenges of yiddishkeit (its true, for so many reasons)
in korbanos it says this is the fire that you should offer to hashem but it is spelled the same way as this is the women, meaning this test is the test that hashehm wants us to take our passion and lust and completly use it only for hashem and get rid of it if it has to do with anything that isnt hashem.
this battle involes many many many emotions and ect so when we work on it we are actually fixing our very own foundation.
it is the hidden part of us so its the real us.
there has never been a time where an entire genertion faces this test like our generation, lso lets go and fix the foundation of the entire world!

wow, hs, you keep putting out the broadsides!

keep up the great work