Let’s say that you want to start running. Try the following. On the first day, go for a one-minute walk. The next day, walk for two minutes. Continue this process until you are walking for 30 minutes at the end of the month. Now, start running for the first minute and walking for the remaining 29. If you continue this process, by the end of the second month, you will be running 30 minutes a day. To easy? That’s the whole point!