God promises eternal life to all who receive Jesus Christ:

I John 5:11-13
¹¹And this is the testimony: God has given us eternal life, and this life is in his Son. ¹²He who has the Son has life; he who does not have the Son of God does not have life. ¹³I write these things to you who believe in the name of the Son of God so that you may know that you have eternal life.

God also promises that everyone who calls on the name of the Lord will be saved. (see ROMANS 10:13)

So, if you believe in your heart that Christ died for you, and that he rose again from the dead, you can ask Him to be your personal Lord and Savior. Receiving Christ into your life as Lord and Savior is the only way to heaven.