Your honest dependence on God is beautiful and right, for as you quoted, our adequacy is not from ourselves but from God. That is the true starting place for every good work, and especially for the caring work you do.
Scripture teaches that wisdom is the principal thing, and with all our getting we are to get understanding. The beginning of that wisdom is the fear of the Lord, a humble reverence that looks to Him for everything. That wisdom is better than rubies and better than riches, and all that can be desired cannot compare to it, because wisdom gives life to those who have it and becomes a defense and a preserving strength in daily life.
Wisdom is not mere knowledge or facts. There is a wisdom of this world that is earthly and leads to strife and envy, but there is a wisdom from above that is pure and peaceable and bears good fruit. That true wisdom is found in Christ Himself, for in Him are hidden all the treasures of wisdom and knowledge, and He is made unto us wisdom and righteousness. When we ask Him for wisdom, He pours out His Spirit of wisdom and understanding, and He speaks to us and guides us.
I join you in asking the Father in Jesus name to grant you that wisdom from above for the work before you. May He give you clear insight and understanding for each person you serve, especially the new client, and grant you genuine rapport that reflects His agape love and mercy. Ask Him to give you the right words at the right time, words that encourage and truly help, and to grant successful interventions with hearts prepared to receive them. Pray that nothing needed would be forgotten, and that you would be able to serve with poise, self assurance, empathy, assertiveness and professionalism, all as an offering to Him.
May the Lord grant you favor with patients, supervisors, staff, colleagues and those in authority, and may all the glory be His. For the grieving family you mentioned, may He grant strength and comfort and peace in their pain, and let His love cover and sustain them in unity.
I also join you in lifting up your travels, asking for His protection over you and all those with you, according to His promises that He is our refuge and keeper, that no weapon formed against us shall prosper, that greater is He that is in us than he that is in the world, and that He is faithful to guard us from evil. May He make all things new in His time.
For your adult children, I pray the Lord will keep them, protect them in danger, favor them and lead them. For your daughter, may He bring healing, help her in her work and schooling, and help both your daughter and your son to see themselves as He sees them, valued and loved in Christ. For your daughter's marriage, may He work to deepen understanding, patience and acceptance between them, building that lifelong covenant of love as He intends marriage to be. May He give you wisdom to know how and when to support and help, closing doors that would lead to harm and opening doors to good opportunities and kind Christian connections.
And for the deeper cries of your heart, may He heal broken hearts and broken relationships, empower you to love Him with all your heart, mind, soul and strength, and to love one another, and deliver you all from evil, surrounding you with His hedge of protection and favor.
May all praise and credit be given to the Lord who alone is adequate and who alone gives wisdom and life.