Sometimes you have to say "no" to people who are very close to you, even to people who love you. They probably do not like it, but they will respect you for it. On the other hand, they will than respect you even more for a "yes". This way other people will develop a much stronger and honest relation towards you.
If you always try to make everybody happy, you'll quickly be unhappy yourself. By following this,
you know exactly where you stand with others. And be as you are; always be honest and straight forward. This might be tough in some cases, but on a long term you gain more.