Indian Prime Minister Narendra Modi’s recent appeal for Indians to change their consumption habits to insulate the economy is a startling move, says Mihir Sharma for Bloomberg Opinion. NEW DELHI: It is rare for Prime Minister Narendra Modi to admit that there’s trouble on the horizon.  He has built his public image around success and security, reassuring his faithful voters that nothing out there in a troubling and dangerous world will be allowed to touch them as long as he is in charge. That