The Chicago Cubs are getting used to life without Kyle Schwarber as the outfielder prepares to have surgery on torn ligaments in his knee, but the slugger isn’t sitting around feeling sorry for himself.

“I’m going to push myself as hard as I can to be back healthy 100 percent,” Schwarber told media during a press availability Saturday in Phoenix. “Wherever that timetable leads me, I’ll be ready.”

The outfielder was injured in Thursday’s game against the Arizona Diamondbacks in a collision with Dexter Fowler. The impact tore the ACL and LCL ligaments in his left knee, and he also suffered a severely sprained ankle. The injuries will keep Schwarber out of the lineup for the remainder of the regular season, but the Cubs hope to have him back in the fold for spring training in 2017.

“My spirits won’t get down,” he said. “I know it’s going to be a long road. There’s going to be ups and downs. I just got to keep a good attitude with this and cheer these guys on.”

Schwarber will fly back to Chicago with the team on Sunday, and he’ll remain in the Windy City through his surgery and rehab, according to team president Theo Epstein.

“Chicago will be the headquarters for the rehab,” Epstein said. “The most important things to Kyle at this point are winning and staying connected to the team.”