💬 How I finally understood recursion, the mental model that clicked

Recursion shuru mein difficult lagti hai, lekin mere liye ek simple mental shift ne ise easy bana diya. Pehle main har recursive call ko step-by-step trace karta tha, jis se complex problems mein confusion hoti thi. Main concept hai “recursive leap of faith” — recursive call par trust karo ke woh smaller problem ko correctly solve karegi. Har recursive function mein do cheezein hoti hain: base case aur recursive case. Example: sum(n) = n + sum(n-1), jahan sum(1) = 1. Recursion ko samajhne ke liye tree traversal jaise problems practice karo. Aur debugging mein sabse pehle base case check karo, kyunki wahi sabse common bug hota hai.