Something is constantly trying to push me off track

I usually meditation with one focus in mind: staying present in the moment. I have found a few ways to do this, such as keeping focus on my breath, staying present inside my head and feel my heart and/or body.  

When I meditated the other day I made an interesting observation. Namely that something inside me always pushes me off track. I’ve observed this many times before, but never put it into words. It is not just that no matter how focused I am and how empty my head is of thoughts, I always eventually find myself lost in a thought stream. This is of course something I noticed many years ago and a fact that every meditator is aware of. But it is also that after a while I’m not really consciously focused on meditating and on the technique that I’m using. 

This made me realize something else that I’ve noticed but never put into words. Namely that this goes for everything in life. I start doing something with a clear intention of what to do and how to do it, but after a while my mind has wandered into something else and I’m not doing what I’m doing in the way that I intended at all. 

On top of that, when I’ve gotten some momentum going with something, something always seems to happen, which I allow to get me down and stall whatever it is that I’m doing. Notice that I said “allow”. Because I always have a choice not of how I feel, but how I respond to my feelings. And I’ve often allowed my emotions to get the best of me.