The ability to succeed

We have the ability to succeed, but sometimes the burdens seem so heavy that I wonder. One of the quotes was on procrastination found here. The next quote is

"The Lord gives us a spirit of hope and a feeling of comfort and confidence that we can overcome the obstacles we face. He has shown the way to gain strength during our struggles. With His assistance, we have the ability to succeed."

--L. Lionel Kendrick, "Strength During Struggles,", Ensign, Oct 2001, 24

"… with His assistance, we have the ability to succeed."