"पीछे जो है और आगे जो है, अंदर जो है उसके मुकाबले छोटे मामले हैं।"
(Pichhe jo hai aur aage jo hai, andar jo hai uske mukaabale chhote maamle hain.)
This phrase is a direct translation of the English sentence, emphasizing that what lies within (inner strength, character, etc.) is more important than what lies behind or before (past experiences or future goals).
Let me know if you have any other questions!