My first ever trade was a few days ago after I finnaly got into crypto.
I have bought Verge @ 205 satoshi. The next morning I sold it @ 265 satoshi for a whooping 25% profit after missing the overnight pump. I was so excited! I will probably never forget the feeling.
Now looking back I feel like slaping myself. It was my first trade and I was hugely grateful for a 25% profit. I will never take the full profits again.
go with 10% incremental profit taking, and in case of doubt just hold ;-) daytrading isnt my thing either, specially as a newbie you most likely will do better just holding.