What the Bible Says about Obstacles to Prayer

Romans 12:12 (KJV from www.biblegateway.com):
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12 Rejoicing in hope; patient in tribulation; continuing instant in prayer;
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We have difficulties to prayer because we fear the pain of the possibility of the truth about our own live to be disclosed to ourselves and to God. And when we flee from God we flee from the only one who can heal and save us.
This fear is based on our own guilt, our own lack of trust and our own opposition to love and serve God.
"The power of God's love is so strong and so powerfull that we need only let it into our lives to be changed... - When we respond to God in hope, humility and silence - all the defenses and blocks... against God's love are swept away. Then, and only then, we can pray." James R.Mitchell