There can never be two perfect people who get into a relationship, that is impossible isn't it, yes I do not believe in the word impossible, however in this world of different characters, philosophies, culture and understandings, there is definitely no room for people with same understanding and ideology, it changes to person to person, on circumstances to circumstances. Hence this quotation makes a perfect sense, you have to always adjust to people to love them and to accommodate them. The more you accommodate and adjust and sacrifice the more is your love towards them. So stop complaining and start understanding and get along.
You do not have to win every gave, you must have to keep focusing and win the most of it, if you fail, keep learning and win again. There are some crucial ones you have to win them and if you fail, you definitely get one more chance.
I have heard this many times, that only attitude adds up to 100% when we number the characters. This is also very true, like many people I too did not learn it the easy way, I had my falls and later changed the attitude and which in turn bought accolades to my work and the altitude also changed eventually. So clever is one who learns from others mistakes and reduces his failures and kisses success much faster than others. So start changing your attitude, be humble and always bow your head and learn and achieve.