While Eerie's answer isn't bad, I direct you to this passage in Romans:
So there are two components here:
1) confess with your mouth that Jesus Christ is Lord;
2) believe in your heart that God raised him from the dead.
In short, if you have a commitment to following Christ's authority and you believe that God raised Jesus from the dead, you've accepted the Gospel. (You're in, regardless of how you might feel about your commitment and your belief.) That is the tl; dr of this post.
Some people don't believe in #2, despite the mountain of historical evidence proving it to be the case. If you're lost on point #2, I recommend Lee Strobel's The Case For Christ For Kids (there is also a teenage and adult version; the latter is a VERY hefty book from my understanding. Basically it comes down to the number of witnesses to the resurrection (upwards of 500!), the reliability of the Gospel accounts (very), and the reliability of the witnesses (people don't put their lives on the line for a lie).
There's also the witness of the life of the Apostle Paul, also, if you're on the fence - complete turnaround from Gospel-hating to Gospel-proclaiming.
But most folks don't get around to sifting through historical evidence. They simply refuse to surrender to God's authority over their life (point 1). They don't look through the historical evidence for the resurrection because they don't want to surrender to God in the first place. They don't acknowledge that God's authority is even real and proceed to fight against him, thinking that through their job, connections, idols, skills, good works - that they will overcome God. Good luck with that!
But your emotions are not involved in believing the Gospel - or at least, they don't have to be. Here's why:
1. Your emotions are fleshly and are subject to the sin nature until you die and are given a new body anyway. God is not going to expect you to immediately overcome your entire body and its emotions on your own before you accept the Gospel. That is too much to require from sinful humanity, and God knows that.
2. You can acknowledge that an authority exists, is truly THERE, and commit to obeying it without feeling like it. In short, you are committing to following Christ's authority even when you don't feel like it. You are committing to fighting your sinful emotions in order to obey Christ on this earth. (It's like when you obey your parents when you don't feel like it; thus you can obey God without feeling like it.)
In short, you surrender to the authority of Christ in whatever broken state you are in, and you trust that God who raised Christ from the dead can change you and raise you from the dead based on the finished work of Christ. You're trusting God for help to live up to the commitment of following Christ, which none of us can do without God's help.
Some people feel like accepting the Gospel, and some people don't, but your feelings aren't involved in accepting the Gospel. Accept the Gospel anyway; the Holy Spirit will help you with your sinful feelings afterwards. (Or even your non-sinful feelings.)
Finally, struggling with your feelings doesn't mean that you haven't accepted the Gospel. If you're trying to follow God and your feelings are getting in the way, pray about it and ask God for help. Ask your parents, pastor, or other brothers and sisters in Christ to help. And you're not wrong or uniquely broken or something for struggling with your emotions either. People did all sorts of nasty things when I was struggling with mine, accusing me of not being a Christian because I couldn't live up to their standards, all sorts of crazy things. In that case, you're being sinned against.
I'm sure, but an argument is no good when you're deciding how to live your life. Fortunately, most of the Bible is clear about what is metaphor and what isn't. When God said "love your neighbor as yourself", it was NOT a metaphor.