Self-belief so important says Celtic winger
Celtic winger Scott Sinclair insists the most important lesson is to believe in your own ability.
The 28-year-old was recently named as PFA Scotland player of the year having scored 25 goals for the league champions this season.
That followed him suffering relegation twelve months ago across the border with former club Aston Villa.
"The main thing, on a personal level, is that I never gave up and I'm getting the rewards for it now," he told BBC Sport. "When you've gone through so many tough times in your career, of not playing and getting relegated, I was the one who stayed behind at training and did things at home. Looking back, it was all worth it.
"The main thing was to come up here and enjoy my football again and get that happiness back into my life of playing week in, week out and having a manager who believes in me."