Life has a lot of distractions especially in modernity, it can be difficult to stay focused on what is important.  Computers may have worsened our attention spans but they are not going away, so we have to become more disciplined with ourselves regarding how we manage our time amidst all of this technology.  Create a long-term goal for yourself and remind yourself of that goal every day; resist the temptation of your vices and avoid instant gratification.  The best things in life require effort so work for them.