I think it is 'human nature' for you or anyone to feel this way. I know I have. I say this to make it clear that I understand where you are coming from.
Born again Christians are given a 'new nature' that wants to obey God. Which goes to war with the old nature & you get what is described in Romans 7.
The answer is a hard one that comes straight from the words of Jesus.
But don't be discouraged. For it is possible through the strength of Christ.(Phil 4:13)
Jesus said in Luke 6:
26 “Woe to you when people speak well of you, for that is just how their fathers treated the false prophets!
27 Nevertheless, to you who are listening, what I say is this:
“Love your enemies!
Do good to those who hate you,
28 bless those who curse you,
pray for those who mistreat you.
29 “If someone hits you on one cheek,
offer the other too;
if someone takes your coat,
let him have your shirt as well.
30 “If someone asks you for something,
give it to him;
if someone takes what belongs to you,
don’t demand it back.
31 “Treat other people as you would like them to treat you. 32 What credit is it to you if you love only those who love you? Why, even sinners love those who love them. 33 What credit is it to you if you do good only to those who do good to you? Even sinners do that. 34 What credit is it to you if you lend only to those who you expect will pay you back? Even sinners lend to each other, expecting to be repaid in full. 35 But love your enemies, do good, and lend expecting nothing back! Your reward will be great, and you will be children of the Most High; for he is kind to the ungrateful and the wicked. 36 Show compassion, just as your Father shows compassion.
I do agree with OneLight's answer and excellent scriptures, by the way.
That is another helpful perspective on it that makes a lot of sense.