The 29-year-old has credited the club's new ownership and the appointment of Kenny Dalglish as manager for the turnaround in fortunes.
Reina told The Mirror:"I probably wouldn't be here if the change of ownership hadn't happened - but that doesn't matter now because we are looking forward to going to Wembley.
"There was a point when I thought that my only option was to move to another club. It was only when there was a change of ownership at Liverpool that I decided to stay.
"It was by far the biggest factor in my decision. When I joined Liverpool in 2005 we were European champions.
"The following year we won the FA Cup and the next we reached the Champions League final. But after 2007, nothing.”
Reina explained the speed at which the takeover helped put the club back on course for honours and praised the additions to the squad.
"To be honest, this time last year, reaching a Wembley final looked a long way off for us. The players always hoped we would challenge again and that we'd get back on track, but we also knew that it would take time.
"We needed better players so that we could become competitive again - and the owners thought so too because they spent good money on the squad in the summer.
“As a result, we have made some improvement. We are going the right way again. We want to be fighting for titles, fighting to reach Wembley.”
The Spaniard also made it clear that the return of Dalglish has given fresh optimism to the club and that they can win anything under his management.
"Bringing Kenny back was a great move. We all know what Kenny Dalglish means to Liverpool. He is like the badge on the shirt," he said.
"He has been the greatest player of all time for our club and with him as the manager people seem to believe even more in the project.
"That's also why people will have a little more patience because they will believe that Kenny can deliver titles like when he was a player and then manager first time around."