Keep your place in any book and stay motivated by young Wim along the way.
I originally designed this bookmark for my then 7 year old son, to help keep him motivated with his cold showers and wild swims - and it worked so well we decided to share it.
 
On the back, you’ll find a 100‑square grid tracker to mark off your cold showers or wild swims. Use pen to record your progress forever, or pencil so you can wipe it clean and start your next 100.
I can - I did!
Set a reward, or simply enjoy the sense of achievement as your tracker fills up.