Alphabetic R
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.
regimented - Referring to something that is arranged in a highly structured or ordered manner, often with little room for flexibility or deviation.

He was determined to lose weight, and he realized that he could accomplish this only with a regimented approach to exercize and diet.