20 week old half working golden

I am still struggling with; am I enough for this dog? Are we the right family for this dog? Will these thoughts go away? I’m struggling with walking her now, she’s getting heavy and she’s pulling towards every person and jumping at them and dogs. She will not walk past a dog. She might walk past a person but more often than not she jumps at them. I just don’t know if I can keep doing this. We’re going to pay a trainer to help but it’s more money I just didn’t think we’d need to spend especially for this breed. I love her so much but I don’t want to do wrong by her and not give her what she needs. I just want to think of something else other than the dog for 5 minutes but I’m constantly worried that im not doing enough for her and constantly searching tips for walks and certain behaviours. I’ve had enough 😢