To get 50 caps you have to go through highs and lows - and I certainly had a few - it has never been rosy but to be still here, as well as enjoying good times at Celtic is very pleasing.
If I really feel that I justify being in the side and I am playing and scoring for Celtic I will say what I feel. I have never been one to just turn up and be a part of the furniture.
Now I have made this decision I will be concentrating my efforts 100% on doing the best I can for Celtic and hopefully this decision will allow me to really enjoy the final few years of my career.
I left West Ham because of a difficult time, I left Arsenal because I wasn't in the team and once or twice I have said I would leave Celtic because I haven't been playing. I have never been a player who is not part of things.
I hope my body holds up, I still have another 18 months left on my contract at Celtic and I have had a decent start with eight goals already in 10 games so I will just keep going.