I thought on my ways, and turned my feet unto thy testimonies.
I thought on my ways - the first step toward repentance, as in the case of the prodigal (Luke 15:17-18); also that to which the Lord urges the Church at Ephesus (Revelation 2:5).
And turned my feet unto thy testimonies - whereinsoever they had turned aside from them. There is a constant tendency to deviation even in the believer. God's Word is the rule whereby to detect deviations, and at once to rectify them.