Nothing is difficult if you focus your time and determination on something and do it in a systematic and gradual way.

To do something difficult is to curb the urge of taking the easy way out and getting some instant satisfaction.

In the morning, the easy way out is to stay in the bed around 6am. Instead, you get up and exercise for half an hour or more.

At work, the easy way out is to maintain and fix the existing things. Instead, you think about some new initiatives and projects.

In the evening, the easy way out is to sit on couch, surfing the web or watching the TV. Instead, you read some technical books you always want to read.