Hey, I know how you feel! I was inactive for over three years at one point because I'd simply lost interest in the lessons and did not feel comfortable in Relief Society or Sunday School. I didn't mind Sacrament Meeting (although I sometimes felt like it was too long) but I hated showing up and then having people who never otherwise talked to me, coming up with smiles and asking why they hadn't seen me around. I hated feeling like I was the "project" in the ward to be showered with what I perceived as "fake love" when I came to meetings. so I just didn't go!
But looking back on it, I think I used my excuses as a crutch to avoid going so I didn't feel so guilty about it. I realized after three years that I was not as happy in life as I wanted to be, that I felt like I lacked purpose, and I just felt a void in my life. I wanted to regain the happiness I'd had back when I attended meetings faithfully and build my testimony back. I finally started doing morning and evening prayer again, reading my scriptures every day (DON'T let yourself get away with not doing it!), and asking Heavenly Father in my prayers to help me experience a change of heart so I could enjoy Church again.
And now, I love being at Church! It is such a blessing in my life and I love being there. I feel so much happier and I also feel like I get a lot more out of the lessons, too. :)
Another thing I would recommend is buying President Uchtdorf's book, "The Remarkable Soul of a Woman". It really helps your self-esteem, love of the Gospel, and makes you feel united with the other women of the Church.