Hi Kat
You know who Paul is, correct? He wrote most of the New Testament. This is what Paul had to say about struggling with sin...
[h=1]
Romans 7:15-20New International Version (NIV)[/h] [SUP]15 [/SUP]I do not understand what I do. For what I want to do I do not do, but what I hate I do. [SUP]16 [/SUP]And if I do what I do not want to do, I agree that the law is good. [SUP]17 [/SUP]As it is, it is no longer I myself who do it, but it is sin living in me. [SUP]18 [/SUP]For I know that good itself does not dwell in me, that is, in my sinful nature. For I have the desire to do what is good, but I cannot carry it out. [SUP]19 [/SUP]For I do not do the good I want to do, but the evil I do not want to do—this I keep on doing. [SUP]20 [/SUP]Now if I do what I do not want to do, it is no longer I who do it, but it is sin living in me that does it.
So, basically, what Paul is saying is 'i can't stop sinning!'. Did this discredit him in Gods eyes? Or did God use this sinner to be His mouthpiece and write the majority of the NT?
Two other things to consider.
One is that just because people seem one way at church does not mean that everything is ok in their life. Everyone at your church sins. Everyone struggles with sin, some people just choose to not let it show. Don't let what a person acts like in public make you think they are the same in private.
The other thing is you're still a new Christian. Being a Christian is a lifelong journey of growth, change and maturing spiritually. As long as you stay committed and don't lose the desire to become something better and to serve God then that is the most important thing. God honors a heart that desires to obey Him, even if you can't always do so in the way you wish. That's why Paul was used so mightily. Not because he had mastered his sins, but rather because he had a heart that sought after God, despite his sins.
As far as being a witness, we are all called to do so, but some people are better at this than others. The bible refers to the church (the collection of believers all over the world) as a body. And just like in a flesh body, the body of Christ is made up of different parts, and each part has a role to fulfill. A hand has a specific set of functions, a nose does also. These are two parts of the body that are there to do two different things.
I, like you, am not great at being a witness. I've often felt my role was more aimed toward people within the church, though i'm also aware it is still my duty to be a witness. It just may mean i don't go out and preach, but perhaps am a witness on a smaller scale, such as towards friends.
And concerning your friends getting angry, well, if you are just discussing your life, such as going to church, because that is a normal part of your life and your friends get angered by this, then that's not a true friend.
Also, the bible says that we will be hated because we choose to follow him. Some people will have a tinge of guilt, some will just be fully rebellious against God, but whatever the reason, people will hold your faith against you. It's just a part of being a Christian you have to learn to accept. And, really, you have it easy. Look at most of the Apostles. Jailed or killed for their faith. Check out a book called Foxes Book Of Martyrs to see what people have had to endure for following Christ. Look at the stories coming out of the middle east with the persecution of Christians. Christ himself was beaten, tortured and killed. If they did that to Christ, and you have Christ within you, then you can expect your faith will cause some dissension.
Hope some of this helped.. and, oh yeah, welcome to CC.