This appears to be a two fold prophesy. "And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head" = Jesus Christ (born of a woman) will once and for all defeat the sting of death and sin upon the Cross. "and thou shalt bruise his heel" = not a mortal injury because Satan sought to kill Jesus on the Cross, but the Lord did not remain in the grave. He arose that we all may enjoy life and have it more abundantly.
Truly, this is the 1st messianic prophecy! God had already prepared for our salvation. The enmity between Satan (your seed) and Jesus Christ (her Seed) indicates the long struggle between good and evil. But, Jesus Christ took the sins of the world when He died on the cross and then arose victorious so that we can have eternal life with Him in heaven.
Temtation even today is the root of all evil. Even today we are tempted to do things, say things we know we shouldn’t. But through Christ we can do all things and that being temptation of conquering sin. The serpant in the garden represented the first sin, disobeying God, eating of the tree. The fruit must have been very appealing just like sin. God knew what was going to happen when he created the tree he has always given us choice but oh how much easier life is when we choose Jesus. Even though life is hard, choosing not to eat of that tree today makes life worth living.