Yorkshire are second bottom of the North Group, having won just four games this season and are already out of contention for a top four place.
They have never won the competition and have only reached three Finals Days, the last in 2022.
The 27-year-old added: “We’ve got the players, but every game counts and it’s been frustrating, because it’s another year [gone].”
Bess joined Yorkshire in 2021 from Somerset, and his former side are now one of the most consistent teams in the competition.
“When I started at Somerset, we were ‘umming and ahhing’, and now they are on a run when they know what they’re doing, the consistency is there, and they have already reached the quarter finals,” said Bess.
“It’s interesting, seeing that as a young player, we all know we’ve got the ability, it’s about piecing it together.
“We’ve got the players, you’ve seen how Will Luxton and James Wharton can hit the ball, we know what we are capable of.”
The Vikings play Lancashire again on Thursday, before travelling to Leicestershire on the final day of the pool stages on Friday.