"My advice is that I hate to lose and I hope you hate to lose more than I hate to lose," Watson said. "We're going to go out there with a purpose."
Europe have won seven of the last nine Ryder Cups, including last year's record comeback from 10-6 down to win at Medinah which prompted the PGA of America to call again on Watson, who led his side to victory at The Belfry in 1993.
"Losing after a four-point lead tears you up," added Watson, who will be 65 by the time of the contest next September. "I still feel like I have a little ownership in that because I played on the team. I understand what the players are going through.
"The way I was chosen as captain was Ted Bishop (PGA of America president) called me not too soon after the 2012 Ryder Cup and he asked me if I would be interested in being the captain.
"I said 'Let me think about it and I'll call you back'. And I called him back, and I said I'd be honoured to, I'd love to do it again.
"In fact, what I didn't say was that I had been waiting for that call for the last 20 years, because I'd always wanted to be a Ryder Cup Captain again."