Ambition measured in weekends burns out. Ambition measured in years actually builds something.

Short timeframes make you judge a long project by the wrong evidence. Two weekends produce almost nothing visible on anything substantial, so measuring there guarantees a sense of failure, and that feeling is what makes people stop. A longer frame lets ordinary weeks accumulate, which is how most real work actually gets done.

Set the horizon honestly, then define the smallest unit you can keep up week after week. Two hours on Sunday is plenty if it happens fifty times. Check progress quarterly rather than constantly, because frequent measurement of a slow process only produces discouragement.