Williams is now hoping to end what has been a long, hard season on another high as Wales prepare to take on Spain in the WXV2 play-off.
Wales endured a disappointing Six Nations, finishing bottom of the table with just one win over Italy.
Saturday’s stakes are made even higher with the winner also securing Rugby World Cup qualification for next year.
“Everyone is in really good spirits at the minute because both us and Bristol finished the season on a high,” said Williams.
“We’re pumping for this weekend.
“Even though our Six Nations didn’t go the way that we wanted, we got through a heck of a lot of work during that, so we’re just picking up on the finer details.
“We know we’re a good side and we’ve proved it, we just need to replicate that and we’ll be fine.
“We’ve got some really good players and once we all do our own roles, we’ll do really well.”