Bayern München utility man Javi Martinez has admitted he feared for his career due to persistent knee injury problems last season.
The Spain international, 27, made just 18 Bundesliga appearances in an injury-hit 2013/14 campaign, but saw his involvement further reduced the last term as he managed just three appearances in all competitions.
Having finally returned to full training this week, Martinez spoke of the hurdles he was forced to overcome while sitting on the sidelines for an extended period.
"I had days where I questioned everything. It was a very difficult time mentally," Martinez told German publication TZ.
"You see the days pass by, yet the knee does not get any better. This entire process is really difficult.
"I even had days that I thought I would never get fit again.
"But my physios always managed to calm me down, they told me that such an injury needs time to heal and that I would return.
"I often had my doubts, but I knew I would get back to my best form when I resumed running exercises again. My knee is doing very well now and I returned to the training pitch on Tuesday. It won't be long now.
"I will get back to regular training action one step at a time. I will avoid duels and physical contact for now, but that will get back as well."