It's a difficult concept and depends entierly how you quantify the subject you're thinking about. When my stomach feels full, when my legs ache, when I'm so tired I can't keep my eyes open, when I've watched the last episode etc etc. Two main variables come into mind, what's avaliable and where you draw your line on limitations. People have different self imposed limitations springing from experience and motivation. How many people have we seen that call it a day because of self imposed limitations and we know full well they are capeable of more. The journey towards a better you is filled with these limitations but the one thing that many fail to understand is that the boundaries on limitations can and do move if you put the effort in. When I lost 55kg, it would have been simple to say, that's enough and indeed that result was more than I, at one time, could ever imagine achieving. Had I listened to those around me who we held captive to their limitations, I would indeed have happily stopped there. BUT, I made one important discovery, when I gave my boundaries a nudge, they moved. All of a sudden, the boundaries started to receede and a whole new world of possibilities opened up. I began to see what might be possible and was damned if I was going to stop my journey at that point. An insatiable desire took over to find out where, or even if I had any limitations. The understanding thatr boundaries are temporary and CAN be moved. The only question that remained in my mind was how fast the journey was going to be towards the next boundary. So when you think you've come up against one of those boundaries in whatever sphere, look beyond. Don't just think about what is possible now, but look into the future at what can be created down the road once you have pushed back again. The only limits that are permanent are those that you give head space for and allow to dictate your actions. Remember, it doesn't have to be earth shattering movements, remember the saying how do you eat an elephant.........one bite at a time".