I used to receive some in the past, but now I hardly receive it. Frequency was usually about once a month, but I haven't received any since last year. And then

I used to receive some in the past, but now I hardly receive it. Frequency was usually about once a month, but I haven't received any since last year. And then I ask my friends and coworkers and they keep saying they are getting it quite frequently, and I am like "What have I started to do wrong?"