心 means heart, mind and is a JLPT N4 kanji. It has 4 strokes and uses the heart radical (心).
Stroke order · 4 strokes
On'yomi (音読み)
シン
Kun'yomi (訓読み)
こころ、
Radical
心 · heart
Strokes
4
How to remember 心
A picture of a heart — a sac in the middle with drops of blood beside it. Japanese people point to the chest, not the head, to mean "mind." 心配 (shinpai) = worry.