I feel for you guys. I struggled so much writing my statements as I am not a good writer (my writing tends to be bloated and pedantic).
When I first began, I would come up a “good” topic, start to develop it, only to find it inadequate at some point, and then eventually discarding it for a “better” topic. It was a vicious cycle of getting nothing done.
What eventually worked for me was developing multiple PS concurrently and then picking the best of the bunch. It got the nit-picking monkey off my back and took off the pressure of having to write “perfect” statements. It also helped in that switching from topic to topic helped me to identify where I could be clearer in each one.
IMO, the best part was that the leftover statements that I didn’t use were easily recycled and submitted to scholarship applications so, in the end, there was no wasted effort. I really wish I did that from the get-go and save few hundred brain cells in the process.