The 24-year-old Heena recently attained the top spot in women's 10-meter air pistol, her rise to the numero uno position hastened by two back-to-back medals -- a gold at the Asian Air Gun Championship in Kuwait, followed by a silver at the ISSF Rifle/Pistol World Cup in Fort Benning, USA last month.
"I think maybe, maybe the best phase has started you can say," Heena told PTI, a day after arriving from the United States.
"Olympics is always a learning experience. It's not just about shooting, it's more elaborate and a lot of preparation is required logistically. There is a lot of stress around it and due to these problems athletes tend to lose focus," she said.
"Now I know what needs to be done and I will try to be better prepared if I get to compete in Olympic Games again."
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"If I feel I have given my best I am happy. My aim is to just keep working on it for the rest of my life, keep polishing my shooting. It's ongoing process all the time. I need to make sure that the technique I have learnt while practising, I am able to duplicate in competition.