Mahela, Sangakkara bid adieu to ODI cricket

"The hardest thing was to evolve with everything, everyday something new, every team is trying something new, so for you to survive, you need to keep pushing yourself and that is the most important thing. To be mentally, physically trying to outdo oneself, something that has been the toughest thing. "But playing cricket with this group of players, enjoying with them in the dressing room, has been satisfying. But the most challenging has been to evolve from I started in 1997 to now when cricket has improved drastically," Jayawardene said.