Verb
relent - To surrender or agree after resisting or opposing, often due to persuasion, pressure, or changing circumstances.

Our of pride, he would always refuse to accept assitance, but when things hit rock bottom, he relented, and finally accepted help from others.
blast - To explode or destroy something or someone with explosives, or to break through or hit something with a similar, very strong force

While building the tunnel through the mountain, the construction crew blasted its way day by day until it was finished.