Very wrong question and understanding about life . Yes you will get comfort to the last level but your understanding of self or human consciousness in general will decide the actual peace level . One more caution on lighter note - assuming that you are not married yet, your better half will control your peace and life more than anything else .
yes. assuming that you own the house or live rent free, and depending on your risk appetite, divide the money into 30-30-30-10 with 30 each going to your low risk assured return like FDs, PPF etc. medium risk returns MF, SIP etc., high risk returns on stocks (you can club this if you are lazy with MF) and finally 10 on extremely speculative investment like option/crypto
post tax your monthly retrun will be between 6-8 lakhs
2. Do something great with your career, human mind works best in the long run when it is secure
post tax your monthly retrun will be between 6-8 lakhs