Many believers are confused about the exact interpretation of the scripture about blasphemy of the Holy Spirit, and so they live in fear of not sinning against the Holy Spirit.
There are three (3) sins against the Holy Spirit:
1) Blasphemy against the Holy Spirit
2) Grieving the Holy Spirit
3) Quenching the Holy Spirit
If the Holy Spirit is still convicting you, persuading you, and trying to draw you closer to Himself, you have not committed the unpardonable sin. Thus, you should not entertain fear in your life, as fear itself is sin. Rather, get closer to the Holy Spirit, listen to him and do what he tells you to, with time you will understanding him more.