Almost Within Reach

Every practice, it seems like I am working to correct something else. I haven't gotten to the point where I have totally mastered one aspect of the stroke so I can concentrate on another thing. I always come away feeling that mastery is just out of reach. I get to the point of "almost there", but almost isn't good enough. If I could just know what success feels like, it would help me push through so I can focus on my conditioning. Almost within reach...it's just a tease to be so close.