Will supplicating and imploring God to be rid of psychological problems change anything of the state of weakness, lack of self-confidence, fear, anxiety, and obsessive-compulsive disorder that dominates a person, especially with a mother's imprecation not to enter Paradise? And does a servant being afflicted with a calamity in his religion mean that God does not love him?

The cure for what you are suffering is to have a good opinion of Allah and to rely on Him, for Allah is more merciful to His servant than a mother is to her child, and He tests for a purpose. Do not succumb to satanic whispers; rather, strive against them by ignoring them and continuing with your worship. Treat fear and anxiety with trust in Allah's decree and knowledge that His judgment is good for the believer, and that a mother's curse upon her child will not affect him if the child is righteous, for Allah does not waste the reward of those who do good, and His mercy precedes His wrath. Continue to supplicate, for it is the best means to achieve what is desired and repel what is disliked.