How did he do it?

It is important to recognize that Jesus was dependent on the Spirit. He had to rely on the Spirit’s resources to overcome temptation. He was weak and human and did not know the life of undiminished deity. He suffered real attack in the temptations and was not play-acting. It was not through confidence in his own power that he put himself at risk. Victory over temptation was not achieved in his own strength. He overcame sin by the power of God and in so doing modeled the lifestyle of faith for us all. Jesus surrendered himself in trust and conquered the powers of evil by the Spirit, as we all must.— Flame of Love, page 88

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And it is because of that very reason that we can overcome today. Only through the indwelling power of the Holy Spirit. The very same Spirit that raised Jesus from the dead! Seems pretty powerful to me.
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