“Believe in God; Believe in Him with perfect trust. Consider Him as sweeter than the sweetest of earthly joys. Ponder that He is the incomparable One. Reflect on His glory night and day and at all times. Let the constant remembrance of Him fill the interstices of your being. Meditate that, “I am naught--He alone Is.” Let the worship of God be the goal of your life. Whatsoever you think, that you become. Cherish the Lord in the recess of your heart. Everything, everywhere is subject to His Will. Ultimately it will be seen that he is All in All.” Yogaswami
“SivaPeruman is the non-dual Reality. I glory in contemplating that He and I are inseparably linked in Oneness. Whatever one yearns for, that he becomes. Therefore meditate that Thou and He are in unison. Then shall all thy acts pulsate as His acts. The Supreme Reality Is He. He is immanent everywhere. The One has assumed many forms. He is beyond birth and death, transcending time and timelessness; He is eternal, and ever unchanging. The perfection of Truth illumines All. ” Yogaswami
Hindus believe in each individual as a soul, a divine being who is inherently good. We all have a threefold nature: instinctive, intellectual, intuitive. Develop the intuitive/spiritual/soul nature with compassion, devotion, penance. Use the intellect to help subdue the instinctive mind. Guilt is not a part of Hinduism. There is no eternal hell. You have a continuity of consciousness when you transition to the inner worlds. There is no devil, but there are mischievous "asuras."