I agree and I don't agree :) It is not all about tactics, that is a mistake that I see repeated often. A difference between 1300 FIDE level and 1800 FIDE level

I agree and I don't agree :) It is not all about tactics, that is a mistake that I see repeated often. A difference between 1300 FIDE level and 1800 FIDE level is partly tactics and avoiding blunders, sure. But there is also more positional play, which is a very good addition in your toolbox, if it is even a tool. There is thinking in fields, which can be about controlling one field that is deciding the game, or about controlling the white fields for example, or the seventh row. There is also intuition, which is much more than pattern recognition, but more letting the unconscious part of the brain work for you (inspired by the moon or by god :) ). (edit) Oh, and I forgot about tempo, which is especially important in the opening or during an attack. Gambits are loved for a reason, you give a pawn for a tempo and win the game :) Also, I feel very much that improvement in chess is often sought in improving someones strong points, because they are the most fun to work on. There are also the weak points that you can work on, which are less comfortable and more confronting, but can be a bottleneck. In psychological sense this works as well.