Thank you very much for the reply
I was just wondering though, does concentration meditation really help for metta, or does practicing metta straight from the start remain effective? I haven't seen an answer to that particular question in the posts. Perhaps there isn't enough evidence to establish a definite answer as well.
The reason why I am asking this is because while I practice metta it seems to me that I have a difficulty generating a -sensation- of goodwill. I can generate the intention and the wish that all beings be free of suffering, but I don't feel it at an emotional level, or in my heart in a sense. Is the intention enough, given enough perseverance?