Helaman 15: 3

How have you been blessed by chastening from the Lord?

"3 Yea, wo unto this people who are called the people of Nephi except they shall repent, when they shall see all these signs and wonders which shall be showed unto them; for behold, they have been a chosen people of the Lord; yea, the people of Nephi hath he loved, and also hath he chastened them; yea, in the days of their iniquities hath he chastened them because he loveth them." (Helaman 15: 3)

And here's the commentary entitled: "Chastening from the Lord is a sign of His love." :

"Samuel’s words contain many stern chastisements, but Helaman 15:3 gives us perspective on chastening from the Lord. How can chastisement from the Lord be a sign of His love? What evidence do you see of the Lord’s love and mercy in Samuel’s prophecies and warnings?

Consider studying Elder D. Todd Christofferson’s message “As Many as I Love, I Rebuke and Chasten” (Ensign or Liahona, May 2011, 97–100), looking for three purposes of divine chastening. When have you seen God work in these ways in your life?"

"Divine chastening has at least three purposes: (1) to persuade us to repent, (2) to refine and sanctify us, and (3) at times to redirect our course in life to what God knows is a better path." (Elder D. Todd Christofferson)

From these three purposes of divine chastening we see that chastisement from the Lord is indeed a sign of His love. Samuel's prophecies and warnings did show the Lord's love because He gave the Nephites the opportunity to repent.

God did redirect the course in life to what He knew was a better path for me many times--specifically when I had my heartaches. My heart got broken many times and each of those heartaches is a chastisement, a sign of God's love for me because He was redirecting my course in life towards where exactly He wanted me to be.