I detest the open B7 and the 4 string 5 chord.
Just hang on, you will get to barre chords sooner or later and you can toss those open chords in the fire place.
I must however admit one thing. If you go slow, and repeat (I take multiple lessons per day and mark for myself when I have mastered the concept. Only when completely mastered I stop repeating that lesson daily) until I can do it fluently.
Patience is required with such an approach though.
• "Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence."
• "Do not worry about your difficulties in Mathematics. I can assure you mine are still greater."