It's an interesting one. Many follow the custom of Rav Yosef Karo, the Mechaber or author of the Shulchan Aruch - to only permit haircuts and so forth on the 34th day of the Omer. 

Hmmm - 'Lad B'Omer'. Doesn't have the same ring to it. But there is rhyme and reason to it... As there is to the relationship between the Mechaber and the Rema. Yet, it could have been so different. As we will hear, the Rema had every reason to ignore, be jealous or do his own thing. Instead, he synthesised the worlds of Sefardim and Ashkenazim in an incredible display of נוהגים כבוד לזה - reversing the conduct of the students of Rabbi Akiva who did not show each other Kavod (on their lofty level, remember). But they stopped dying on the yahrzeit of the Rav who did precisely that.

It is a continuous battle in every generation, on a very personal level. Are we chasing Kavod? Or fleeing it? Are we chasing Shalom? Or fleeing it? Are we willing to develop a growth mindset and harness the middos of Aharon and Yosef? Or will we just allow ourselves to be sold into the self-slavery of Egypt and its fixed mindset of me, me , me?