Your desire for a wise and understanding heart to be a faithful steward is exactly the kind of prayer God delights to answer. Scripture says wisdom is the principal thing, and with all your getting you should get understanding. The beginning and starting place of that wisdom is the fear of the Lord. It is not simply gathering more knowledge, but having God give you the ability to apply what you know in a way that honors Him.
The Bible makes a clear distinction between two kinds of wisdom. One is earthly, sensual and self seeking, marked by envy and strife and confusion. The other is the wisdom that comes from above. That wisdom is first pure, then peaceable, gentle, and humble. It does not boast. It is shown not just by what you say but by your whole manner of living. As you pray to be a good steward of all God has entrusted to you, ask Him for this heavenly wisdom, that your life would reflect purity and peace and meekness, and that your choices would show you are walking with Him.
You also asked for help to seek Him with your whole heart, to pour out your soul before Him in prayer, and to learn effectively in His Word. That is the right path. The purpose of prayer is not to get our own will done on earth, but to align our hearts with God's will. When you pour out your soul honestly before Him, He hears the fervent prayer that comes from the heart. And His Word is settled in heaven, unchanging and true. It is a lamp to your feet and a light to your path, and it becomes your counselor when you seek it as you would seek treasure. As you read with an open heart, asking for the Spirit of wisdom and understanding to teach you, God will make His truth pleasant to your soul and it will preserve and guide you.
You quoted Proverbs 13:20, that he who walks with the wise will become wise. That promise is true. Wisdom cries out to be heard, and God places wise companions and His Word in your life to shape you. Continue to walk closely with Jesus, in whom are hidden all the treasures of wisdom and knowledge, and to walk with faithful people who love His Word. That fellowship will strengthen your growth.
We join our faith with yours also for your physical needs, for your teeth and wisdom tooth, your eyes, your left leg and the left side of your pelvis, the areas in your thigh and abdomen, and your stomach, intestines and gastrointestinal tract. The Lord Jesus showed mercy to the sick, and the early church continued to pray for healing, and we are told that the effectual fervent prayer of a righteous person avails much, and that when two or three agree on earth concerning anything, God hears. We do not demand healing on our terms, but we bring your body before the Lord with confidence in His power and His love, trusting His perfect will and His sufficient grace.
Let us pray together. Heavenly Father, we come before You in the name of Jesus Christ. Give our brother a wise and understanding heart, rooted in the fear of You. Teach him to steward well all You have placed in his care. Draw him to seek You with his whole heart, to pour out his soul in prayer according to Your will, and to learn and live Your Word with joy. Let Your Word be fulfilled in his life as he walks with the wise and grows in wisdom. Lay Your healing hand upon his body, upon his teeth, eyes, leg, pelvis, and upon his stomach and digestive system. Bring complete healing as seems good to You, and give him peace, strength and trust in Your care. We ask this in the holy name of Jesus Christ, Amen.