This is just to orient you a little:
If you want to meditate, the main things are getting a fine method that suits you, and learn to practise it safely and soundly and reap benefits. Some accumulate over time; others may be felt for each sitting.
And then, when you sit down to meditate, disturbing thoughts and emotions may come to awareness. There is a need to deal with it. The fit way is to resume your method as soon as you manage it, as long as your method is safe. ◦Transcendental Meditation is very safe, shows research in Sweden by Dr Jaan Suurküla.
As early as in the 1970s, the Swedish government's National Health Board conducted a nationwide epidemiological study that found that hospital admissions for psychiatric care were 150-200 times less common among the 35,000 people practicing Transcendental Meditation in Sweden, than for the population as a whole. The calculation was made by Professor Jan-Otto Ottoson, Scientific counsellor of the National Health Board in Sweden (Suurküla, University of Gothenburg, Vasa Hospital, Gothenburg, Sweden, 1977.)
Dr Suurküla ends the paper thus:
The remarkably small incidence of psychiatric illness among the population of individuals who had learnt the Transcendental Meditation technique compared to the general population indicates that the TM technique is not only safe but also has considerable value in the prevention of psychiatric illness.
Dr ◦Suurküla further concludes in 2010:
TM has not only a preventive effect against psychiatric illness but effectively promotes mental stability and improved mental health, even in severely disturbed cases. . . .
More: ◦David Lynch Foundation.
A study in the American Journal of Managed Care indicates that there are no known side effects associated with the Transcendental Meditation technique.
So far, so good? Some use other methods, and call for other forms of mind-work than TM. If you want to make your mind matter to you, there are many books about it, such as psychoanalysis after Freud, and lots of others. Such books may or may not contain unverified claims. They may become causes of problems also. You are entitled to ask against being taken in: "Where many schools of psychology and thought teach differently, who teaches right? And where is the good evidence?"
Anyway, we do not have to believe a lot in order to take up meditation, generally speaking. We can begin to notice how many thoughts and feelings distort our experience and keep us from getting calm and energetic - and as soon as we notice them, we just resume the meditation method calmly, without getting ruffled, or overly ruffled. If we can do that, we may not need specialist help, as the findings of Dr Suurküla document (cf. Bodian 2006, 71).
As for "There is such a hope," the fit thing to do is to check the foundation of it. Expert findings that a method "effectively promotes mental stability and improved mental health, even in severely disturbed cases", tells "There are statistically founded, good reasons for hope."
A further step is to take up a fit meditation method and try it out for some time. It the method has not been studied or researched, it may or may not work well, may or may not be safe to all or nearly all. That is a caveat of a sort.