The England left-back signed a new four-year deal last week.
"It was great to sign and commit to the club and put everything else to bed and be able to focus on football and the future - my future and the club's future," Baines told evertontv.
"It has been really positive for the most part this season and I've been really impressed with the manager's approach to everything.
"The various aspects to what he does and the way we approach games is asking new questions of all of us, whether you've been here a few months or a few years.
"It is challenging and has freshened the place up. It was a fresh start for all of us and it was exciting because it was such a change and that was a big part of it."
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