Does falling into sin indicate that there is something wrong with one's 'aqeedah (belief system)?

What is zuhd (asceticism)? Does it mean wearing scruffy clothing, fasting constantly, and keeping away from society, or something else?

When a person repents, he makes a vigorous start and says: "The Shaytaan is telling me to slow down", so he does more acts of worship. Then his enthusiasm cools down, and he says: "Allah does not burden any person beyond his scope", and his acts of worship become less until he goes back to the way he was. 

My question: What advice can you give? Should he make a vigorous start, or take a gradual approach until it is established and then add more after a while, or should he follow the saying: "When your wind blows, then make the most of it"?.

My husband and my family do not get along, they are not muslim, although I have invited them many times, nor do they understand Islam.  My husband wants to prevent my parents from seeing my children because he feels they have cursed Allah, although they have not done so.  Is this allowed?

Allah tells us in the Qur'an not to cut off our blood relations. What is the interpretation of the Ayah that commands us not to severe ties of kinship? Who does it refer to? Just parents and siblings? What if one maintains contact with one's parents only through telephone or letters although he is capable of visiting them. Yet, he feels that maintaining a certain distance is healthier to the relationship ?

I have a few questions concerning parents:
1. What right does my Mother have over me? 
2. What right do I have over my mother? 
3. What do I have the freedom to do (which is Halal or Mubah, Ofcourse) without my Mother having the right to stop me? 
4. When does the Father have the final say in a matter? 

I love my mother very very very much. She is very over protective, and sometimes I feel like I'm in chains. I know she is doing it out of extreme love for me. How can I tell her that I need a little choice of my own in life.

Can a muslim pray for his non-mulsim mother who has passed away?

Is it permissible to ask the Muslims -when meeting with them- about the state of their faith or their hearts? One of them said to me that this is a matter of the unseen and that it is not appropriate to ask about it.

If one Muslim brother loves another Muslim brother, does he have to say to this brother "I love you for the sake of Allah?

What are our duties towards our Muslim brothers who have been stricken by calamities and disasters throughout the world?

On some trips there is a Qur'aan reading program, and they divide the people into separate circles (halaqahs) and someone who reads Qur'aan well to correct any mistakes. Is there anything wrong with this?

Some scholars of tajweed said that it is obligatory to read Qur'aan with the rules of tajweed. Is that true?