Why motivations suddenly increase at times but also decreases at other times?

It's a matter of achievement. Often times we have grand schemes, but fail to compartmentalize tactically, so the net goal seems further away.

For example, making a huge list of everything that needs to be done to a house in order to ready for sale. It becomes overwhelming and often results in things incomplete because it seems to overwhelming. We tend to then focus on our lack of achievement and how much is left than the task at hand. It seems so monumental, and always seems to lack progress, we tend to give up.

Instead, take on one room at a time, and if that room has a significant amount of things needed, further divide that up. Set achievable items for completion, a general rule of thumb is no more than 5 tasks. Celebrate the achievement before moving on to the next set.

This same philosophy can be applied to many things in life.

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