Do you recognise yourself in any of these statements?
When I'm at the pool I see slow swimmers fighting the water. At all costs I must
work on my stroke technique and focus on efficiency.
not a strong enough swimmer yet.
always stood me in good stead. What I need to do is train harder.
Procrastination can take other forms too, such as endlessly studying great swimmers on Youtube or debating technique to the nth degree on internet forums. The more intellectual the swimmer the more elaborate this analysis-paralysis becomes but more often than not people who do this are simply putting off going to the pool and actually swimming.
Our suggestion? Don't put it off another day. Commit to a period of six to eight weeks and make some major changes in your approach to swimming. Then focus on those changes every session and be objective about the outcome by measuring your swimming speed before and after. The worst thing that can happen is that you slow down slightly and need to revert to what you were doing before. But far more likely you'll finally get off that plateau and break through to a higher level of swimming.
What changes should you make? There are some ideas here and here but quite likely it's the thing you've been avoiding doing more than everything else.