First, I do not practice writing often, nor for a long time when I do. So that might be a reason I am struggling with rhythm lately. Second, I do not intend this post to be an example of good rhythm. In fact, I am largely neglecting it in this post. Third, I am leaving out discussion of consonant and vowel sounds, and focusing only on rhythm having to do with stress and non-stress.
Now, I can only think of two main reasons why someone might struggle to write prose with good rhythm. One is that they may have poor phrasing ability, so that they cannot think of many alternative ways to say the same thing. The other is that they may simply have poor rhythm.
My question is: Which of these two reasons -- poor phrasing ability and poor sense of rhythm -- is the main reason for writing with poor rhythm. More specifically, knowing which of the two is the reason, or whether both are, how does one solve it? Is it useful to practice constrained writing, such as metrical writing, to enhance phrasing ability? Is it useful to play with scansion marks, to enhance rhythmic ability? What role does immitation play in this?
If one has excellent phrasing ability, it would seem to my mind unnecessary for them to concern themselves so much with scansion, as by thinking of various ways of phrasing a thought they could discover one with the right rhythm. It also seems to my mind, that if one has excellent rhythmic ability, they could choose words for a thought in accord with the rhythm in their mind with some effort, as though writing in meter. Therefore, it appears that having one ability compensates for the other, although I must add that the complete absence of one renders the other completely useless. For without ability with phrasing there is no phrasing, and without ability with rhythm there is no rhythm, because rhythm requires a rhythmic sense.
So I request insight and suggestions on my question. Thank you for your answers.