had probs years ago trying to learn guitar- gave up guitar & learned mouth organ.

Went back to guitar after & found the gob-iron playing had helped my tune holding ability.

Similarly, tried to learn tin whistle- hopeless!

Learned keyboards & melodeon in between- started whistle again last year- coming on in leaps & bounds!

Also taking your instruments out & playing with other musicians helps a lot- especially for boosting confidence!

you know what they say- a change is as good as a rest- worked for me- could for you too!