We providentially landed on these verses last week as we were preaching through the Book of Philippians. When Paul wrote these words in Phil 3:13, he was not advocating actually forgetting, but putting past accomplishments and well as failures behind him so that he could move unimpeded toward the goal that was set before him.
“That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;” Phil 3:10
We also need to not rest on our laurels. We need to press forward with renewed fervor to know Jesus Christ better every day.