"And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God. Luke 1:35"
The Holy Spirit is needed to ensure your success in whatever good endeavor you are engaged in. The fact that you are good or that the endeavor you are engage in is good does not guarantee a fruitful result. You need the power of the Holy Spirit to bring it to a perfect end.
There were many virgins in Nazareth of Judea, but it took the Holy Spirit to have favor with Mary to endue her with power to conceive and give birth to Jesus Christ.
There is nothing impossible for the Holy Spirit, but you must be born again to receive the power of the Holy Spirit. After you are born again, He comes to live in you. Then you can ask Him to empower you through desire, fasting, persistent prayer, and waiting.
The initial sign that He has anointed you with power is when you prophesy and speak in tongues; afterwards you will see gifts of the Holy Spirit operating in your life. Use this anointing to change things in your life, and live as a true witness for Christ Jesus (Acts