We do not sometimes fail because of what we are doing.
Sometimes we fail because of what we are not doing. Self-discipline is required.
At work we perform our responsibilities for the good of the organization in order to receive compensation, appreciation, recognition and satisfaction. In our personal lives we need to be self-disciplined, no matter how we feel about the tasks to be completed in order to accomplish our desired expectations.
Self-discipline is not an option, it is a must.
2 Timothy 1:7
For the Spirit God gave us does not make us timid, but gives us power, love and self-discipline.