Vishal Khandelwal, author and former equity analyst, discusses his book 'The Sketchbook of Wisdom' and the lessons it offers. Topics covered include habits for shutting out noise, thoughts on re-reading books, and the philosophy of Ikigai. They also explore prerequisites for becoming a full-time investor, dealing with bear markets, and portfolio allocation. Additionally, they touch on Vishal's latest investing mistake and habits for shutting out noise.