Here's a tip from agile development: Give your tasks estimates (1, 2, 3,...). They wouldn't directly represent time spent, but relative complexity of the task.

Here's a tip from agile development: Give your tasks estimates (1, 2, 3,...). They wouldn't directly represent time spent, but relative complexity of the task. You'll be able to see how many points you've finished in a day and your average velocity per day. You'll be able to plan your day, and resist working on something that won't give you points.