This is, of course easy to say but difficult to achieve...
This can be extremely difficult to achieve using verbal reasoning alone.
Finding effective solutions for climate change is difficult to achieve without global cooperation.
Encontrar soluciones eficaces para el cambio climático es difícil de conseguir sin cooperación global.
They have high standards which many times are very difficult to achieve.
Making sustainable choices in daily life is difficult to achieve for many families.
It is a novel about simple happiness, so difficult to achieve.
Granted, it could be difficult to achieve this but not impossible.
Y a pesar de que luzca difícil de lograr, no es imposible.
However it is so difficult to achieve and even harder to maintain.
Sin embargo es algo tan difícil de conseguir y aún más de mantener.
However, this ideal solution is often difficult to achieve.
Sin embargo, esta solución ideal es a menudo difícil de conseguir.
I believe that the compromise reached yesterday was quite difficult to achieve.
Compruebo que el acuerdo alcanzado ayer fue bastante difícil de conseguir.
This pretty, natural look isn't difficult to achieve.
Este look lindo y natural no es muy difícil de lograr.
These days online security is a necessity and is difficult to achieve.
Actualmente la seguridad en línea es una necesidad y es difícil de alcanzar.
Gaining a high metabolism is a task that is difficult to achieve.
Ganando un metabolismo alto es una tarea que es difícil de lograr.